Question

if 10 men working 7 hours a day dig a train 147 M long how many men working 8 hours a day will be there trains 168 M long

Answer 1

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Answer 2

Answer : 10 men

Given that :

m1 = 10 men h1 = 7 hours and w1 = 147 m

m2 = ?, h2 = 8 hours and w2 = 168 m

As we know that :

$\frac{m1 \times h1}{w1} = \frac{m2 \times h2}{w2} \\ \\ = > \frac{10 \times 7}{147} = \frac{x \times 8}{168} \\ \\ = > x = \frac{10 \times 7 \times 168}{147 \times 8} \\ \\ = > x = 10 \: men$

So, the same quantity of men can same work as digging.