How many ounces will the heaviest baby have to gain to reach a healthy level?

Question

In 1998, Nkem Chukwu gave birth to the first set of surviving octuplets.  The eight babies weighed from 11.3 ounces to 28.6 ounces at birth.  Leonard Weisman, the Texas Children’s Hospital’s chief of neonatal services, said it was imperative they gain lots of weight before they go home.  “For instance, the 500-gram babies are going to have to quadruple their weight [to reach a healthy level],” he said.  How many ounces will the heaviest baby have to gain to reach a healthy level?

Answer 1

500g×4=2000g=70.55oz would seem to be the healthy weight.

The heaviest baby is 28.6oz, so it needs to gain 70.55-28.6=41.95oz.