Question

Seperate 90 into two parts so that one part is four times the other

Answer 1

18 and 72

Explanation:

the smaller part can be assigned as x while the larger will be 4x. Both numbers need to add up to 90, giving the equation: 4x+x = 90

Solve:

4x+x = 90

5x = 90

x = 18

4x = 72