v) A alone can do a piece of work in 35 days. If B is 40% more effi cient than A, then B will fi nish the work in ___________days.
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Answer:
49 days
Step-by-step explanation:
= let total work of A = 100 units
= A can complete 100 units in = 35 days
= since B is 40% more efficient
= B can complete 140 units in = 35 days
= B can complete 100 units in = 35 × 140 ÷ 100
= B can complete 100 units in 49 days
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