Asha's monthly income is 60% of Deepak's monthly income and 120% of Maya's income. What is Maya's monthly income if Deepak's monthly income is Rs. 78000 ?

Answer: Option B

Asha's monthly income :
= 60% of 78000
$$\begin{array}{rl}& =\text{Rs}\text{. }\left(\frac{60}{100}\times 78000\right)\\ & \text{ = Rs}\text{. 46800}\end{array}$$
Let Maya's monthly income be Rs. x
Then,
120% of x = 46800
$$\begin{array}{rl}& \Rightarrow \text{x}=\left(\frac{46800\times 100}{120}\right)\\ & \Rightarrow \text{x}=39000\end{array}$$