Question

42. Efficiency of Kanchan is four times to that of
Hina. If they will complete the work is 24
days by working together, then in how many
days can Hina alone complete the work?
(a) 36 days
(b) 24 days
(c) 144 days
(d) 96 days​

Answer 1

Step-by-step explanation:

k: h = 4:1 ratio of work

k =4x, h=x

K+h = 4x+x = 5x

k+h takes 24 days

k+h in 1 day does 1/24 part of work

5x = 1/24 part of work

x = 1/120 part of work

k = 4x = 4/ 120 = 1/30 part of work

kanchan takes 30 days to finish the job

h = x = 1/120 part of work in 1 day

Hina takes 120 days to finish the job