Question

Bob lays 200 bricks in 1 hour. How long would it take Bob to lay 960 bricks?

Answer 1

Bob will take `4` hours and `48` minutes to lay `960` bricks

Explanation:

As Bob lays `200` bricks in one hour

For `1` brick, it would take `1/200` hours

For `960` bricks, it would take `1/200xx960` hours

= `1/(5cancel(200))xx24cancel(960)=24/5` hours

= `(20+4)/5` hours

= `20/5+4/5=4 4/5` hours

As `4/5` hour are equal to `4/5xx60=48` minutes

Bob will take `4` hours and `48` minutes to lay `960` bricks