Question
A certain number is to be subtracted from 90 and 72 to get
the numbers in the ratio 5:4. What is the number?Solution
ATQ,
Let the number be 'y'.
(90 - y) : (72 - y) = 5 : 4
→ 4 × (90 - y) = 5 × (72 - y)
→ 360 - 4y = 360 - 5y
→ y = 0
So, y = 0
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