Question

1.

A worker uses 4 gray tiles for every 5 blue tiles that he uses.
If he uses 60 gray tiles, how many blue tiles does he use?

b. If he uses 540 tiles altogether, how many gray tiles does he use?

Answer 1

240

Explanation:

60/ 4=15

15×5=75

b) 4+5=9

540/9=60

4×60=240