The ratio of income of Dusyant and Kuldeep is 3:4 and the ratio of their expenditure is 2:3. If 90% of Kuldeep's expenditure is equal to the income of Dusyant, then what is the ratio of the savings of Dusyant and Kuldeep?
Answer & explanation
Correct answer: option 4
Dusyant : Kuldeep
income 3x : 4x
Exp 2y : 3y
3y × 90% = 3x
9y = 10x
⇒ x = 9, y = 10
income 3 × 9 : 4 × 9
exp. 2 × 10 : 3 × 10
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savings 7 : 6