Question

The ratio of an object's weight on Earth to its weight on Neptune is 5 : 7. How much would a person who weighs 150 pounds on Earth weigh on Neptune?

A. 107 1/7 pounds
B. 170 pounds
C. 210 pounds
D. 750 pounds

Answer 1

WE : WN = 5 : 7
150 : x = 5 : 7
or:
`(150)/(x)= (5)/(7)`
We will cross multiply and then divide:
`x= (150*7)/(5) =210`
Answer: C) 210 pounds.