Question

Me ajudem, por favor. Questão 15

Answer 1

100/a=(16+28+36)/16
100/a=80/16
80a=16 . 100
80a=1600
a=1600/80
a=20

100/b=80/28
80b=28 . 100
80b=2800
b=2800/80
b=35

100/c=80/36
80c=36 . 100
80c=3600
c=3600/80
c=45