## Q&A - P5 Math

### Help

Mary, Jonatha and David shared a sum of money. The total amount of money received by Jonathan was 2/3 the amount received by David. Mary received twice as much as what Jonathan and David received. After Mary had given $48 to Jonathan and $27 to David, and Jonathan gave $3 to David. At the end 3 of them had the same amount of money. Find the difference between the amount of money that Jonathan and Mary had at first

### Re: Help

At firstWoodybird wrote:Mary, Jonatha and David shared a sum of money. The total amount of money received by Jonathan was 2/3 the amount received by David. Mary received twice as much as what Jonathan and David received. After Mary had given $48 to Jonathan and $27 to David, and Jonathan gave $3 to David. At the end 3 of them had the same amount of money. Find the difference between the amount of money that Jonathan and Mary had at first

J [-][-] (2u)

D[-][-][-] (3u)

M[-][-][-][-][-][-][-][-][-][-] (10u)

J [-][-] (2u) + 48 - 3

D[-][-][-] (3u) + 27 + 3

M[-][-][-][-][-][-][-][-][-][-] (10u) - 48 - 27

3u + 27 + 3 -----> 2u + 48 - 3

1u -----> 15

Difference between the amount of money that Marie and Jonathan had at first = 8u = 8 * 15 =

**$ 120**(Ans)

### Re: Q&A - P5 Math

Hi

Please assist on the following:

Mrs Lim bought a luggage, a jacket and a pair of shoes. The jacket and the pair of shoes cost $232.10. The luggage and the jacket cost $560.60. The luggage cost 4 times as much as the pair of shoes. How much more did the luggage cost than the jacket?

Thanks.

Please assist on the following:

Mrs Lim bought a luggage, a jacket and a pair of shoes. The jacket and the pair of shoes cost $232.10. The luggage and the jacket cost $560.60. The luggage cost 4 times as much as the pair of shoes. How much more did the luggage cost than the jacket?

Thanks.

- linden2000
- BlueBelt
**Posts:**324**Joined:**Thu Jan 06,

### Re: Q&A - P5 Math

Cost of luggage - cost of shoes = $560.60-$232.10 =$328.50

Since cost of luggage is 4x cost of shoes,

luggage -> 4 units

shoes -> 1 unit

difference -> 3 units

3 units = $328.50

1 unit = $109.50

Shoes cost $109.50

Jacket costs $232.10 - $109.50 = $122.60

luggage costs $109.5 x 4 = $438

diff of cost bet jacket n luggage = $315.40

Since cost of luggage is 4x cost of shoes,

luggage -> 4 units

shoes -> 1 unit

difference -> 3 units

3 units = $328.50

1 unit = $109.50

Shoes cost $109.50

Jacket costs $232.10 - $109.50 = $122.60

luggage costs $109.5 x 4 = $438

diff of cost bet jacket n luggage = $315.40

- ChiefKiasu
- Site Admin
**Posts:**16395**Joined:**Mon Sep 03,**Location:**Singapore**Total Likes:**385

### Re: Q&A - P5 Math

Neat wrote:Hi

Please assist on the following:

Mrs Lim bought a luggage, a jacket and a pair of shoes. The jacket and the pair of shoes cost $232.10. The luggage and the jacket cost $560.60. The luggage cost 4 times as much as the pair of shoes. How much more did the luggage cost than the jacket?

Thanks.

- ashleychng
- KiasuNewbie
**Posts:**1**Joined:**Thu Aug 25,

### Catholic High Math SA2 2009, Q10

Please help to solve this problem sum:-

Ash bought number of books at an average price of $8.

If he decides to buy another book which cost $18, the average price of all the books will become $10.

Find the number of books he bought. (no algebria method pl)

Ash bought number of books at an average price of $8.

If he decides to buy another book which cost $18, the average price of all the books will become $10.

Find the number of books he bought. (no algebria method pl)

- MathIzzzFun
- KiasuGrandMaster
**Posts:**2357**Joined:**Wed Mar 09,**Total Likes:**5

### Re: Catholic High Math SA2 2009, Q10

Hiashleychng wrote:Please help to solve this problem sum:-

Ash bought number of books at an average price of $8.

If he decides to buy another book which cost $18, the average price of all the books will become $10.

Find the number of books he bought. (no algebria method pl)

cheers.

### Re: Q&A - P5 Math

Hi,

Need help to solve the following Math questions. Many thanks in advance.

The ratio of the number of stalks of carnation to the number of stalks of roses in a floral shop was 5:2. Each stalk of carnation costs $4, while each stalk of rose costs $6. The florist would be able to collect $4800 from the sale pf all his roses and carnations.

(a)How many stalks of roses were there?

(b)After selliong some roses, the ratio of carnations to roses became 10:1. How many stalk of roses were sold?

The table below shows the pricing of 3 types of tickets.

Ferry-$30 Train-$20 Bus-$10

The ratio of the number of ferry tickets sold to the number of train tickets sold was 5:6. The ratio of the number of train tickets sold to the number of bus tickets sold was 4:11. The amount of money collected from the sale of bus tickets was $270 more than the amount of money collected from the sale of ferry tickets. How much more money was collected from the sale of ferry tickets than the train tickets?

Need help to solve the following Math questions. Many thanks in advance.

The ratio of the number of stalks of carnation to the number of stalks of roses in a floral shop was 5:2. Each stalk of carnation costs $4, while each stalk of rose costs $6. The florist would be able to collect $4800 from the sale pf all his roses and carnations.

(a)How many stalks of roses were there?

(b)After selliong some roses, the ratio of carnations to roses became 10:1. How many stalk of roses were sold?

The table below shows the pricing of 3 types of tickets.

Ferry-$30 Train-$20 Bus-$10

The ratio of the number of ferry tickets sold to the number of train tickets sold was 5:6. The ratio of the number of train tickets sold to the number of bus tickets sold was 4:11. The amount of money collected from the sale of bus tickets was $270 more than the amount of money collected from the sale of ferry tickets. How much more money was collected from the sale of ferry tickets than the train tickets?

- MathIzzzFun
- KiasuGrandMaster
**Posts:**2357**Joined:**Wed Mar 09,**Total Likes:**5

### Re: Q&A - P5 Math

Hiwahwah wrote:Hi,

Need help to solve the following Math questions. Many thanks in advance.

The ratio of the number of stalks of carnation to the number of stalks of roses in a floral shop was 5:2. Each stalk of carnation costs $4, while each stalk of rose costs $6. The florist would be able to collect $4800 from the sale pf all his roses and carnations.

(a)How many stalks of roses were there?

(b)After selliong some roses, the ratio of carnations to roses became 10:1. How many stalk of roses were sold?

The table below shows the pricing of 3 types of tickets.

Ferry-$30 Train-$20 Bus-$10

The ratio of the number of ferry tickets sold to the number of train tickets sold was 5:6. The ratio of the number of train tickets sold to the number of bus tickets sold was 4:11. The amount of money collected from the sale of bus tickets was $270 more than the amount of money collected from the sale of ferry tickets. How much more money was collected from the sale of ferry tickets than the train tickets?

Q1.

carnation : roses (qty) = 5:2

carnation : roses (value) = 5x4: 2x6 = 20: 12 = 5u : 3u

Total 8u = $4800, 1u = $600

Number of carnation stalks = 5 x 600/4 = 750

Number of roses stalks = 3 x 600/6 = 300

After selling some roses,

carnation : roses (qty) = 10 : 1 = 750 : 75

Roses sold = 300 - 75 = 225 stalks.

Q2. use the same approach .. find the ratio for quantity, and then ratio for value...

Ferry tickets : Train tickets = 5 : 6

Train tickets : Bus tickets = 4 : 11

Ferry Tickets : Train Tickets : Bus Tickets = 10 : 12 : 33

Ferry Tickets : Train Tickets : Bus Tickets, in value

= 10x3 : 12x2 : 33x1

= 30 : 24 : 33

= 10u : 8u : 11u ... should be able to complete the solution from here

cheers.