30 men can finish a piece of work in 28 days. How many days will be taken by 21 mens to finish it.
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if 30 men complete a work in 28day
then 21men will complete it in x days
according to the condition
men. day
30. 28
21. x
30x=21×28
x =21×28÷30
x=196÷10
x= 19.6
therefore 21men will complete the work in 19days and 6hours
then 21men will complete it in x days
according to the condition
men. day
30. 28
21. x
30x=21×28
x =21×28÷30
x=196÷10
x= 19.6
therefore 21men will complete the work in 19days and 6hours
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