A cheetah is 300 feet from its prey. It starts to sprint toward its prey at 90 feet per second. At the same time the prey starts to sprint at 70 feet per second. When will the the cheetah catch the prey?

Question

Can you please provide an explantaion?
Thanks

Answer 1

This has nothing to do with weighted average.

They run the same time, and the cheeta runs 300 feet further.
cheetadisstance=90t
prey distance=70t
but preydistance = cheetadistance-300
so
70t=90t-300, right?

Answer 2

How many quarts of pure orange juice should Mike add to a 10% orange drink to create 6 quarts of 40 % orange mix juice. Let p represent the number of quarts of pure ornage juice he should add to the orange drink.