The ratio of income of A, B and C is 3:7:4 . A’s expenditure is 12.5%
Right Answer is: D
Let the income of A, B and C be 3x 7x and 4x respectively.
The ratio of their expenditure
A : B : C
9 : 8
8 : 10
9 : 8 :10
Therefore their expenditure are 9y, 8y and 10y respectively.
Now, according to the question
3x – 9y = 6000
4x – 10y = 10000
On solving the above equation, we get
6x = 30000
therefore difference in income of B and C = 7x – 4x = 3x = Rs. 15000