UPSC
Government Jobs Exams
if 24 men and 32 boys can do a piece of work in 5 days and 26 men and 48 boys can do it in 4 days.how long will 14 men and 20 boys take to do it?
Read Solution (Total 2)
-
- if 24 men and 32 boys can do a piece of work in 5 days and 26 men and 48 boys can do it in 4 days.
120M+160B= 104M+192B
16M=32B
1M= 2B
24M+32B= 40M
14M+20B= 24M
40 M can do work in 5 days
24 M will do work in 40*5/24 = 25/3 days - 11 years agoHelpfull: Yes(1) No(1)
- In 1 day ,
24m + 32b = 1/5 th work
26m + 48b = 1/4 th work
=> 1 man = 0.005 work per day
=> 1 boy = 0.0025 work per day
14m + 20b = 0.07 + 0.05 = 0.12 work per day
Total time taken = 1 / 0.12 = 8.33 days
- 11 years agoHelpfull: Yes(0) No(1)
UPSC Other Question