Question

15 persons can dig a tunnel 20 m long in a day . howany person are required to dig a tunnel 140 m long in a day ?​

Answer 1

Answer:

105 persons

Step-by-step explanation:

20 m tunnel is dug by 15 person

1 m tunnel can dug by ,

$15 \div 20 = \frac{3}{4} \: \: person$

140 m tunnel can dig by ,

$= \frac{3}{4} \times 140 \\ = 3 \times 35 \\ = 105 \: \: perons$