Answer:
23cm
Step-by-step explanation:
5+4+3+4+4+3=23
He should cross multiply 90 and 60, and then divide by 100. The answer is 54.
5
x = 6
An inverse variation is
xy = k where k is the constant of variation
8*9 = k
72 = k
xy = k
Let y = 12
x*12 = 72
Divide each side by 12
12x/12 =72/12
