56 Workers Can Build Wall 180 Hours How Many Workers Will Be Required To Same Work In 70 Hours

If 56 workers can build a wall in 180 hours, how many workers will be required to do the same work in 70 hours?

Answers:

Workers :  Hours :: workers : Hours

56             :   180    ::    x             :  70

∴ By inverse proportion

56 × 180   = x × 70

⇒ x = (180 × 56)/70

= 144 workers