Question

78 men can do a work in 140days ,In how many days will take 42men do the same work.​

Answer 1

Step-by-step explanation:

$\frac{78}{140} = \frac{42}{x} \\ \\ \frac{39}{70} = \frac{42}{x} \\ \\ \frac{13}{70} = \frac{14}{x} \\ \\ 13x = 14 \times 70 \\ \\ 13x = 980 \\ \\ x = \frac{980}{13} \\ \\ x = 75\frac{5}{13}$

Answer 2

Answer:

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Step-by-step explanation:

42 men can do a piece of work in 140/78×42=980/13=75 upon 5/13 days.