Q&A - P3 Math

[Bunny27]

Need help to solve below question:


John and Jane shared some marbles in the ratio 7:3. When John gave Jane 12 marbles, he found that they each had the same of marbles. How many marbles did Jane have at first?

Thanks!

[iFruit]

Bunny27:

Need help to solve below question:


John and Jane shared some marbles in the ratio 7:3. When John gave Jane 12 marbles, he found that they each had the same of marbles. How many marbles did Jane have at first?

Thanks!

In the begninning,

John:Jane:Total = 7:3:10

Since the total didn't change, The total at end must be

John:Jane:Total = 5:5:10

For a difference of 2 (3->5), Jane would have 3 at first.
For a difference of 12, Jane would have at first = 12/2 x 3 = 18

[ttyh]

theron and ahmad were given same number of rubber bands each.

After theron used 50 rubber bands and ahmad used 86 rubbber bands, theron had 5 times as many rubber bands as ahmad. how many rubber bands did each of them had at first?

[small]

paranoid mum:

Adrian & Zen shared some marbles equally. After Zen received 58 marbles from Adrian, how many more marbles than Adrian did Zen have?


The answer is 116 marbles??

I can't figure out why?

Hi paranoid mum,

Hope this helps,cheers !!

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[small]

ttyh:

theron and ahmad were given same number of rubber bands each.

After theron used 50 rubber bands and ahmad used 86 rubbber bands, theron had 5 times as many rubber bands as ahmad. how many rubber bands did each of them had at first?

Hi ttyh,

Please find the solution, hope it helps.

http://farm6.static.flickr.com/5300/5437601247_1ff30a084f_z.jpg\">

[ttyh]

Thanks Small!

[small]

You are welcome, ttyh…

[christina soh]

small:

You are welcome, ttyh....

Please help. Thank you.

1. Jo has $146 and her sister, Mary has $338. Each of them bought a present to their mother on her birthday of the same price. Now, the money left with Mary is 4 times of Jo. What is the price of the present ?

2. Ali has twice the amount of money than Bob. Bob has thrice the amount of money than Jim. If Ali has $40 more than Jim, how much money does Ali has ?

[tianzhu]

Hi


Hope this helps.

Best wishes.

http://farm6.static.flickr.com/5052/5447357878_6645afa260_b.jpg\">

[tianzhu]

christina soh:

2. Ali has twice the amount of money than Bob. Bob has thrice the amount of money than Jim. If Ali has $40 more than Jim, how much money does Ali has ?

Hi

For your second question, due to time constraints, I’ll give some pointers for you to draw the MD.

Jim --- 1 unit
Bob ----- 3 units
Ali ----- 6 units

6 -1 ------- 5
5 units ------- 40
1 unit -------8

Ali ------- 6 units -------48

Best wishes