Question

210 men working 12 hours a day can finish a job in 18 days how many men are required to finish the job in 20 days working 14 hours a day by multiplicative factor method.
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Answer 1

Answer:

210 men can complete a work in 12 hours in 18 days means they worked for (12×18) hours.

so, by inverse variations,

210×12×18

20×14

=> 162 men

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Answer 2

Answer:

162 Men will be required.

• Given data :

210 men can finish the job by walking 12 hours per day for 18 days.

The deadline for the new time limit is 20 days at the rate of 14 hours per day.

Now,

For 12 hours for 18 days the number of men required is = 210

For 1 hour for 18 days the number of men required is = 210×12

(Inversely related)

For 1 hour for 1 day the number of men required is = 210×12×18

(Inversely related)

For 14 hours for 1 day the number of men required is = (210×12×18)/14

(Inversely related)

For 14 hours for 20 days the number of men required is = (210×12×18)/14×20 = 162

So, 162 men are required to complete the job in the given time.

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