Question

Reema, Ruchi and Richa can make a painting in $15$, $20$ and $30$ days, respectively. They undertake to make a painting for Rs. $810$. The share of Reema exceeds that of Ruchi by.

• A. Rs. $91$
• B. Rs. $92$
• C. Rs. $90$
• D. Rs. $89$

Answer 1

The correct option is C Rs. $90$

Here, Reema, Ruchi and Richa can make a painting in $15,20$ and $30$ days, respectively
So, efficiency of Reema, Ruchi and Richa $=4:3:2$
$\therefore$ Share of Reema $=\frac{810}{9}\times 4=360$
Share of Ruchi $=\frac{810}{9}\times 3=270$
$\therefore$ The share of Reema exceeds that of Ruchi by $=(360-270)=$Rs. $90$.