Question

1. The difference of two numbers is 15 and their ratio is 3:2. Find the numbers.
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Answer 1

Step-by-step explanation:

Therefore by guess and check, the numbers are 45 and 30.

Method 2 requires mental modelling:

3U - 2U = 1U

As such, 1U represent the difference which is 15.

3U = 15 x 3 = 45

2U = 15 x 2 = 30

Therefore the numbers are 45 and 30.

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