Machine A makes 100 units in 4 hours; Machine B makes 100 units in 2 hours. Efficiency ratio A:B =
Machine A makes 100 units in 4 hours; Machine B makes 100 units in 2 hours. Efficiency ratio A:B =
A alone 15 days; B spends twice the time of A. B’s time:
A alone 15 days; B spends twice the time of A. B’s time:
A works twice as fast as B; B works twice as fast as C. If C needs 36 days, A needs:
A works twice as fast as B; B works twice as fast as C. If C needs 36 days, A needs:
A can complete a job in 15 days. In how many days will he do 40%?
A can complete a job in 15 days. In how many days will he do 40%?
A completes work in 25 days, B in 10 days. Work ratio A:B =
A completes work in 25 days, B in 10 days. Work ratio A:B =
A alone 10 days, B alone 20 days, C alone 30 days. Together:
A alone 10 days, B alone 20 days, C alone 30 days. Together:
A = 12 days, B = 6 days. If A works alone for 3 days, remaining work =
A = 12 days, B = 6 days. If A works alone for 3 days, remaining work =
A completes 1/3 work in 5 days. Total time?
A completes 1/3 work in 5 days. Total time?
A does 1/4 in 3 days. Remaining work =
A does 1/4 in 3 days. Remaining work =
A does 1/6 per day. Time for 5/6 work:
A does 1/6 per day. Time for 5/6 work:
If A is 3 times as fast as B, and B needs 24 days, A needs:
If A is 3 times as fast as B, and B needs 24 days, A needs:
A can do a work in 9 days, B in 18 days. Work done in 2 days together:
A can do a work in 9 days, B in 18 days. Work done in 2 days together:
If 12 workers finish in 8 days, 6 workers need:
If 12 workers finish in 8 days, 6 workers need:
A is twice as efficient as B. Together finish in 12 days. A alone?
A is twice as efficient as B. Together finish in 12 days. A alone?
A, B start a work. A leaves after 10 days; B completes in 5. If A alone does in 20 days, total work time was:
A, B start a work. A leaves after 10 days; B completes in 5. If A alone does in 20 days, total work time was:
A does 30% in 6 days. Whole work?
A does 30% in 6 days. Whole work?
8 people finish a job in 6 days. 12 people finish in:
8 people finish a job in 6 days. 12 people finish in:
A, B, C efficiencies = 3:2:1. If C takes 30 days, A takes:
A, B, C efficiencies = 3:2:1. If C takes 30 days, A takes:
A alone 40 days; B alone 60 days. Together:
A alone 40 days; B alone 60 days. Together:
If A’s efficiency = 150% of B, and B takes 15 days, A takes:
If A’s efficiency = 150% of B, and B takes 15 days, A takes:
A does work in 5 days; B does same in 10 days. Work ratio A:B =
A does work in 5 days; B does same in 10 days. Work ratio A:B =
A alone 18 days; B joins after 6 days. Total time?
A alone 18 days; B joins after 6 days. Total time?
A alone 4 days; B alone 12 days. Together:
A alone 4 days; B alone 12 days. Together:
A, B do a job in 8 days; B, C do in 12 days; A, C do in 16 days. A alone?
A, B do a job in 8 days; B, C do in 12 days; A, C do in 16 days. A alone?
If 5 men finish a job in 20 days, 10 men finish in:
If 5 men finish a job in 20 days, 10 men finish in: