The ratio of monthly incomes of A and B is 3: 4 and the ratio of their monthly savings is 7: 6, If the income of A is equal to twice the expenditure of B. then what is the ratio of the expenditures of A and B?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 1:2.
Let income of A and B be 3x and 4x, savings be 7y and 6y
Given: 3x = 2(4x − 6y)
⇒x/y = 12/5
Assume x = 12, y = 5
A's expenditure = 36 − 35 = 1
B's expenditure = 48 − 30 = 18
Ratio = 1 : 18