3 men and 4 boys can complete a piece of work in 12
days. 4 men and 3 boys can do the same work in 10
days. Then 2 men and 3 boys can finish the work in
number of days is:
(1) 17½
(2) 5 ⅝
(3) 8 (4) 22
Answers
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Answer:
Correct Answer:
A) 17 and a half days
Description for Correct answer:
(3men+4boys)12 days
= (4men+3boys) 10 days
18men+24boys=20men+15boys
2 men = 9 boys..............(i)
4men+3boys=(2×9)boys+3boys=21boys
21 boys can do a work in 10 days
Total work = 21×10=210 units
2 men + 3 boys = 9 boys + 3 boys (from eq i)
= 12 boys
12 boys can do 210 units in
210/12=35/2=17 and 1/2 days
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