Question

8 men can complete the work in 25 days working 5 hours per day.if 5 men can complete the work in 20 days, how many hours does each man have to work per day?​

Answer 1

answer : 10 hours

explanation : use formula, $M_1D_1H_1=M_2D_2H_2$

where M indicates number of men.

D indicates number of days

H indicates hours.

here, 8 men can complete the work in 25 days working 5 hours per day.if 5 men can complete the work in 20 days.

so, $M_1=8,D_1=25,H_1=5$

and $M_2=5,D_2=20,H_2=?$

so, 8 × 25 × 5 = 5 × 20 × $H_2$

or, 200 × 5 = 100 × $H_2$

or, $H_2$ = 10 hours.

hence, 10 hours does each man have to work per day.

Answer 2

Answer:

⇒ 10 hours.

Step-by-step explanation:

By using formula:

⇒M1D1H1 = M2D2H2

Note: here

M ⇒ man,

D ⇒ day and

H ⇒ hour

ATQ:

Q: 8 men can complete the work in 25 days working 5 hours per day. If 5 men can complete the work in 20 days.

To Find: Number of hours each man have to work per day.

• M1 = 8, D1 = 25, H1 = 5

• M2 = 5, D2 = 20, H2 =?

⇒ 8 × 25 × 5 = 5 × 20 × H2

⇒ 200 × 5 = 100 × H2

⇒ 1000 = 100 × H2

⇒ H2 = 1000/100 = 10

∴ Each man has work for 10 hours per day.

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