Question

three-quarter of a number is 15
work out four-fifths

Answer 1

original number is 20, so 4/5= 16

Answer 2

Answer:

20

Step-by-step explanation:

let the number be m.

3/4xm=15

3m=15×4

3m=60 (divide both sides by 3)

m=20

the number is 20.