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P5 Mathematics

Question post on Thu, 13/09/2018 1:25pm

Hi, please help to solve this question. Thanks.

THW · Answer 1 · Post on Thu, 13/09/2018 4:25pm

Let Box A contain 12 units.

Then Box C contains 2 units.

Box B contains 3 units + 4.

Box B contains $10 more than Box C, so 3u + 4 = 2u + 10

1u = 6

Total in the 3 boxes = 12u + 3u + 4 + 2u = 17u + 4 = 17 × 6 + 4 = 102 + 4 = 106

The total amount is $106.

Sysy · Answer 2 · Post on Mon, 17/09/2018 4:32pm

Sysy Post on Mon, 17/09/2018 4:32pm

Hi thw,

At first, how do you know box A contain 12 units?

Thanks.

THW · Answer 3 · Post on Mon, 17/09/2018 4:37pm

Box A has 6 times as much as C. But 6 is not divisible by 4 so we use 12 units.

Then C is 1/6 of 12 units = 2 units.

Sysy · Answer 4 · Post on Mon, 17/09/2018 5:10pm

Sysy Post on Mon, 17/09/2018 5:10pm

Hi thw,

Ok. I knew it.

Thank you.