Question

if the minimum amount of weight you could add to a 10 pound backpack someone was wearing (with them noticing) was 1 pound, how much would have to be added to a 100 pound backpack for them to notice?

Answer 1

10 pounds

Explanation:

given ratio weight:added weight=10:1

100:x=10:1

100/x=10/1

solving for x

100=10x

x=10