Question

20 men can cut 30 terees in 4hours. If 4 men leave job, how may trees will be cut in 6 hours?

Answer 1

Answer:

men Trees. hrs

20. 30. 4

16. x. 6

25/16x30x4/6=25

25 trees will be cut in 6 hrs by l6 men

Answer 2

Answer:

36 trees

Solution:-

20 men can cut 30 trees in 4 hour

so in 1 hour 20 men work=1/4 of 30 tree

$\frac{1}{4} \times 30 = \frac{15}{2}$

1 hour 20 men can cut trees=15/2

Let 1 man be x

$x = \frac{1}{20} \times \frac{15}{2} = \frac{3}{8}$

So 1 man can cut 3/8 tree in 1 hour

A/Q

4 men left the job

Therefore,(20-4)=16 men

$1 \: man = \frac{3}{8} \: tree$

$16 \: men = x \: trees$

$x = \frac{3}{8} \times 16 = 6$

16 men can cut 6 trees in 1 hour

___________

1 hour=6 trees

6 hour=6×6

=36 trees