Question

On Monday 4 bricklayers took 3 hours to lay a total of 4200 bricks.
On Tuesday there are only 2 bricklayers.
Work out how many hours it will take the 2 bricklayers to lay a total of 3150 bricks​

Answer 1

Answer: 4.5 hours

Step-by-step explanation:

If it takes 4 bricklayers 3 hours then it will take 1 bricklayer 12 hours to lay a total of 4200 bricks.

So in 1 hour the bricklayer lays down 4200/12 bricks = 350 bricks

If there are 2 bricklayers then they will lay 350 x 2= 700 bricks in an hour.

So it will take them 3150/700=4.5 hours

Hope you understood