Question

Obed's bike is twice as heavy as Elsa bike but only 3 pounds heavier than George bike if George bike weighs 15 pounds how much does Elsa bike weigh?

Answer 1

George's bike = 15.
Obed's bike = 18.
Elsa's bike = 18/2 = 9 pounds.

Answer 2

If George's bike weighs 15 pounds, then we can say that because Obed's bike is 3 pounds heavier than George's, Obed's bike weighs 18 pounds. If Obed's bike weighs 18 pounds, then we can say that because Elsa's bike is twice as heavy as Obed's, Elsa's bike weighs 9 pounds.