defence exam Indian Navy Fireman/Fire Engine Driver Mock Test 2024 Quantitative Aptitude Time and Work Work Efficiency
A can complete a piece of work in 20 days. B can complete the same work in 36 days. If A and B work together, then the number of days required to complete the work is:
1
\( 10 \frac{6}{7} \)
2
\(12 \frac{6}{7} \)
3
\(12 \frac{1}{7} \)
4
\(10 \frac{1}{7}\)