A can complete a work in 20 days and B can complete the same work in 15 days. If they work together, in how many days will the work be completed? MCQ with Answer and Explanation

Explanation:
A share = (1/18) / (1/18+1/26) ×100 = 59.09%.

Explanation:
Total work = LCM(6, 8, 12) = 24 units. Efficiency of A = 4, B = 3, C = 2. Combined efficiency = 4 + 3 + 2 = 9. Time taken together = 24 / 9 = 8 / 3 = 2(2/3) hours.

Explanation:
Remaining work = (1 - 5*(1/10+1/20)) ×100 = 25.0%.