Question

# 12 men or 18 women can reap a field in 7 days. In what time can 4 men and 8 women
reap the same field?
(A) 10 days
(B) 13 days
(C) 9 days (D)
14 days​

Answer 1

Step-by-step explanation:

the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behaviour, origin, and distribution.

the plants and animals of a particular area.

"the biology of the Chesapeake Bay"

the physiology, behaviour, and other qualities of a particular organism or class of organisms.

Answer 2

Answer:

(C) 9 days

Step-by-step explanation:

12 men or 18 women can reap a field in 7 days, in what time can 4 men and 8 women reap the same field?

12 men can do the work in 7 days.

So, 1 man can do the task in 12 x 7 = 84

So, part of total work completed in one day by a man = 1/84

Work completed by 4 men in one day = 4/84 = 1/21 = 3/63

18 women can do the same task oin 7 days.

So, one woman can do task in 18 x 7 = 126

So, part of total work completed in one day by an woman = 1/126

Work completed by 8 women in 1 day= 8/126 = 4/63.

Therefore, fraction of work completed in one day by 4 men and 8 women, = 3/63 + 4/63 = 7/63 = 1/9.

So work is completed by 4 men and 8 women in 9 days.