Banking Quantitative Aptitude Sample Paper Quantitative Aptitude Sample Paper-47

Ruhi spends 30% of her monthly salary on rent, transportation and bills in the respective ratio of 7: 5: 3. If she spends Rs. 3560 on the transportation, how much is her monthly salary?

A) Rs. 30250

B) Rs. 40000

C) Rs. 35600

D) Rs. 44750

Correct Answer: C

Solution :

Let monthly salary of Ruhi = Rs. x

and let she spend \[7a,\]\[5a\] and \[3a\] on rent, transportation and bills, respectively.

According to the question,

\[x\times 30%=7a+5a+3a\]

\[\Rightarrow \] \[x\times \frac{30}{100}=15a\]

\[\Rightarrow \] \[x\times 3=15\times a\times 10\]

\[\Rightarrow \] \[x=5a\times 10\] (ii)

It is also given that she spends Rs. 3560 on transportation.

\[\therefore \] \[5a=3560\]

Now, putting the value of \[5a\] in Eq. (i), we get

\[x=3560\times 10=35600\]

Hence, monthly salary of Ruhi = Rs. 35600