Pankaj, Qadir and Rohan can each complete a piece of work alone in 20, 36 and 25 days respectively. Their daily wages are in the ratio 5 : 4 : 3. Pankaj earns Rs 400 in all for completing the work alone. How much does Qadir earn in all for completing the same work alone?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Rs 576
Total earning = number of days worked × daily wage. Pankaj’s total gives the value of one share of the wage ratio.
Daily wages: Pankaj \(5u\), Qadir \(4u\), Rohan \(3u\)
Pankaj: \(20\times5u=100u=400\), so \(u=4\)
Qadir: \(36\times4u=144u=144\times4=\) Rs 576
Qadir earns Rs 576.