A) Rs. 7000, Rs. 4200
B) Rs. 10000, Rs. 6000
C) Rs. 6000, Rs. 3600
D) Rs. 8000, Rs. 4800
Correct Answer: D
Solution :
Let the incomes of A and B be Rs. 5x and Rs. 3x respectively, and their expenditures be Rs. 9y and Rs. 5y, Then \[5x-9y=2600\] and \[3x-5y=1800\] \[\therefore \] \[\frac{\begin{align} & 25x-45y=13000 \\ & 27x-45y=16200 \\ \end{align}}{\begin{align} & -2x=-3200 \\ & x=1600 \\ \end{align}}\] Then, their incomes are Rs. 8000, Rs. 4800.You need to login to perform this action.
You will be redirected in
3 sec