Question

175 men can dig a canal 3150 m long in 36 days. How many men are required to dig a canal 3900 m. long in 24 days?

Answer 1

Given that 175 men dig a canal 3150m in 36 days.

175 = 3150 = 36.

? = 3900 = 24.

The number of men is required to dig a canal = (175 * 3900 * 36)/(3150 * 24)

                                                                                = 24570000/75600

                                                                                = 325.


The number of men required = 325.


Hope this helps!

Answer 2

Hi ,

Men ( M1 ) = 175 ,

Length ( L1 ) = 3150 ,

Days ( D1 ) = 36.

-----------------------

M2 = ?

L2 = 3900 ,

D2 = 24

( M2 × D2 ) / L2 = ( M1 × D1 ) / L1

M2 = ( M1 × D1 × L2 ) / ( L1 × D2 )

= ( 175 × 36 × 3900 ) / ( 3150× 24 )

After cancellation ,

= 325