Worker P is 50 % as efficient as worker Q. Worker R does half of the work done by P and Q together . If R alone does the work in 40 days , then P, Q, and R together can do the work in -

Question

Worker P is 50 % as efficient  as worker Q. Worker R does half of the work done by P and Q together . If R alone does the work in 40 days , then P, Q, and R together  can do the work in -

Accepted Answer

সঠিক উত্তর:    1313 days । ব্যাখ্যা: