## Q&A - P5 Math

### Re: Q&A - P5 Math

[quote="Er Jie"]Hi, would appreciate if someone can help with this question. Thanks in advance.

Mr. Tan had some $5 and $10 notes. The ratio of the number of $5 notes to the number of $10 notes was 1:4. He exchanged twelve pieces of $10 notes for $5 notes. The ratio of $5 notes to $10 notes then became 1:2.

How much money did Mr. Tan have?[/quote]

Is the ans $1350?

Mr. Tan had some $5 and $10 notes. The ratio of the number of $5 notes to the number of $10 notes was 1:4. He exchanged twelve pieces of $10 notes for $5 notes. The ratio of $5 notes to $10 notes then became 1:2.

How much money did Mr. Tan have?[/quote]

Is the ans $1350?

### Re: Q&A - P5 Math

First dayraghupavithra wrote:Hi

There were 120 more roses than tulips in a florist shop on the first day.On the second day, the florist increased the number of tulips by 30%and sold20% of the roses,resulting in a total of 726 roses and tulips in the florist shop.How many roses did the florist sell on the second day?

Pls help

Roses = a+120

Tulips = a

Second day

Roses =1.3a

Tulips =0.8a+96

Total =2.1a+96=726

2.1a =630

a = 300

Roses sold =0.2a+24=84

Ans=84

### Re: Q&A - P5 Math

HI,

Can someone pls help with the following questions :-

Q1 : After Mr Tan had sold 1/4 of his apples and Mr Lee had sold 3/5 of his apples, they realised that they had the same number of apples left. They had a total of 1428 apples left. How many apples did Mr Lee sell ?

Q2 : Justin had 20% more stamps than Firdaus. Karthik had 40% fewer stamps than Justin. After Karthik bought 460 more stamps, he had twice as many stamps as Justin and Firdaus. How many stamps did they have at first ?

Thank you in advance for your kind assistance.

Can someone pls help with the following questions :-

Q1 : After Mr Tan had sold 1/4 of his apples and Mr Lee had sold 3/5 of his apples, they realised that they had the same number of apples left. They had a total of 1428 apples left. How many apples did Mr Lee sell ?

Q2 : Justin had 20% more stamps than Firdaus. Karthik had 40% fewer stamps than Justin. After Karthik bought 460 more stamps, he had twice as many stamps as Justin and Firdaus. How many stamps did they have at first ?

Thank you in advance for your kind assistance.

### Re: Q&A - P5 Math

Hi. In response to question 13,

The solution is as followed:

Assume the start is 100%

2011 - 100%

2012 - 115% (increase by 15%)

2013 - 108.1% (6% x 2012, 94\100 x 115%)

so the increase is only for 2011 to 2013

Therefore, 108.1% - 100% = 8.1%

8.1% = 81

100% = 81/8.1 x 100 = 1000

1000+81 = 1081

The solution is as followed:

Assume the start is 100%

2011 - 100%

2012 - 115% (increase by 15%)

2013 - 108.1% (6% x 2012, 94\100 x 115%)

so the increase is only for 2011 to 2013

Therefore, 108.1% - 100% = 8.1%

8.1% = 81

100% = 81/8.1 x 100 = 1000

1000+81 = 1081

### Re: Q&A - P5 Math

$5 notes $10 notesEr Jie wrote:Dear Kiatkhim,

Yes, answer given was $1350. Can you please explain? Thanks.

---------------- -------------

1 : 4

+24 -12

1p. : 2p

1u + 24 = 1p

4u - 12 = 2p

4u - 12 = 2( 1u + 24 )

4u - 2u = 48 + 12

U= 30

Total : 30 ($5) + 120 ($10) = $1350

### Re: Q&A - P5 Math

Q1. Answer : 1071Jerico wrote:HI,

Can someone pls help with the following questions :-

Q1 : After Mr Tan had sold 1/4 of his apples and Mr Lee had sold 3/5 of his apples, they realised that they had the same number of apples left. They had a total of 1428 apples left. How many apples did Mr Lee sell ?

Q2 : Justin had 20% more stamps than Firdaus. Karthik had 40% fewer stamps than Justin. After Karthik bought 460 more stamps, he had twice as many stamps as Justin and Firdaus. How many stamps did they have at first ?

Thank you in advance for your kind assistance.

Mr Lee :

Left 2/5u --> 714

U --> 1785

Sold 3/5u --> 1785 * 3/5 = 1071

- Kangkangteo
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**Posts:**345**Joined:**Sun May 11,**Total Likes:**1

### Re: Q&A - P5 Math

Jerico wrote:HI,

Can someone pls help with the following questions :-

Q1 : After Mr Tan had sold 1/4 of his apples and Mr Lee had sold 3/5 of his apples, they realised that they had the same number of apples left. They had a total of 1428 apples left. How many apples did Mr Lee sell ?

1 - 1/4 = 3/4 = 6/8

1 - 3/5 = 2/5 = 6/15

6 + 6 = 12u ---> 1428

1u --> 1428/12 = 119

9u ---> 119 x 9 = 1 071

Mr Lee sold 1 071 apples.

Q2 : Justin had 20% more stamps than Firdaus. Karthik had 40% fewer stamps than Justin. After Karthik bought 460 more stamps, he had twice as many stamps as Justin and Firdaus. How many stamps did they have at first ?

F --> 100%

J ---> 120%

K ---> 60% x 120% = 72%

72% + 460 ---> (120% + 100%) x 2 = 440%

368% ---> 460

292% ---> 460/368 x 292 = 365 stamps

They had 365 stamps at first.

Thank you in advance for your kind assistance.