Question

20 workers working 7 hours a day can finish a piece of work in 16 days .how many hours a day 40 workers should work to finish the same work in 7 days

Answer 1

20*7*16=2240 and same work than time spand same
40*x*7=2240
x=2240/280
x=8 hours answer

Answer 2

they should work for eight hours a day

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