Question

5 men and 10 boys can do a piece of work in 30 days and 8 men and 12 boys can do the work in 20 days then the ratio of daily work done by a man to that of a boy.

Answer 1

Step-by-step explanation:

(9m+12b)×4=(4m+16b)×6

After simplifing this ratio efficiency of Men : Boys=4:1

total work=(9×4+12×1)×4=48×4

Total eff. Of 6 men=6×4=24

Total eff. Of 24 boys=24×1=24

Again men eff +boys eff=24+24=48

Work will be completed in=48×4/48=4 days

Answer 2

QUESTION:

• 5 men and 10 boys can do a piece of work in 30 days and 8 men and 12 boys can do the work in 20 days then the ratio of daily work done by a man to that of a boy.

SOLUTION:

(9m+12b)×4=(4m+16b)×6

After simplifing this ratio efficiency of

Men : Boys=4:1

Total work=(9×4+12×1)×4=48×4

Total eff. Of 6 men=6×4=24

Total eff. Of 24 boys=24×1=24

Again men eff +boys eff=24+24 = 48

Work Will be completed by 4 * 48/48 =4 days