Question

if 12labours take 70 days to complete one work how many days will 21labourers take to complete the same work​

Answer 1

Answer:

$40 \: days$

Explaination:

$12 \: labour \: can \: do \: = \: 70 \: days$

$1 \: labour \: can \: do = \: 70 \times 12$

$21 \: labour \: can \: do =$

$\frac{70 \times 12}{21}$

$40 \: days$