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P5 Mathematics

Question post on Mon, 19/09/2016 9:46pm

Hi all need help for this question. TIA!!!

Amy. Beatrice and Calin had some stickers. Calin had 18 more stickers than Amy. Calin had 3/4 as many stickers as Beatrice. After Amy and Calin received a total of 36 stickers from Beatrice in a ratio of 3:1 respectively, all the three girls had the same amount of stickers.

a) How many stickers did Calin have at first?

b) What is the ratio of Amy’s stickers to Beatrice’s stickers to Calin’s stickers at first?

Answer

Ender · Answer 1 · Post on Mon, 19/09/2016 9:59pm

Let’s call them A, B and C respectively.

If B has 4u, then C would have 3u. (3/4 of B)
And A would have 3u-18

36 stickers given, from ratio of A:C=> 3:1, A would received 3p and C would received 1p.
4p = 36
p = 9

A received 3p = 27
C received 1p = 9

After giving out the stickers
B = 4u -36,
A = 3u + 9,
C = 3u +9

And since they all have equal number of stamps in the end,
4u – 36 = 3u + 9
u = 45

a) At first C has 3u = 135 stickers ###

b) In the beginning,
A has 3u-18 = 117
B has 4u = 180

A : B : C => 117 : 180 : 135
13 : 20 : 15 ####

mumof8 · Answer 2 · Post on Fri, 23/09/2016 8:50pm

mumof8 Post on Fri, 23/09/2016 8:50pm

Hi Ender

thank you so much!