Question
What number should be deducted from 45 and 30 so that their
new ratio becomes 4:3?Solution
ATQ,
Let the required number be 'y'.
ATQ,
(45 - y) : (30 - y) = 4 : 3
Or, 3 × (45 - y) = 4 × (30 - y)
Or, 135 - 3y = 120 - 4y
Or, y = 15
So, y = 15
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