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 |
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