7 out of every 8 students surveyed owns a bike. The difference between those who do and don't is 72. How many students were surveyed?

Question

I'm good at ratios, but not THAT good when it comes to stuff like this. Plz help!!!

Answer 1

(7/8)s own bike

(1/8)s do not

 

(7/8)s - (1/8)s = 72

(6/8)s = 72

s = 72(8/6) = 96 students