Question

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?​

Answer 1

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

21012=352=1712 days