Question

12 men working 8 hours a day complete a piece of work in 10 days to complete the same work in 8 days working 15 hours a day how many men are needed​

Answer 1

Answer:

8 men

Step-by-step explanation:

P1H1D1=P2H2D2

(12*8*10)=P2(8*15)

960= P2(120)

Then P2= 960/120

P2=8

Answer 2

Answer:

Step-by-step explanation:

For first case,

No. of men= 12

work done daily= 8 hrs

Days required to complete= 10 days

Total hours men worked= work done daily*total days required= 8*10=80 hrs

For Second case,

No. of men be 'x'.

work done daily= 15 hrs

Days required to complete= 8 fays

Total hours men worked= work done daily*total days required= 15*8=120 hrs

So, we  can write:

⇒12/80=x/120

⇒12*120=80*x

⇒12*120/80=x

⇒12*3/2=x

⇒6*3=x

⇒x=18

Therefore, no. of men needed = 18

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