at store a , a game system sells for $150. the same system sells for $175 at store b . use a ratio to compare the price at store a to store b

Question

 this is a math lesson, the lesson is about ratios

Answer 1

ratio of price at A to the price at B is $150/$175 so that reduces to 6/7.  Therefore the best place to purchase this (identical) item is store A because their price is less than the price at store B. If this ratio had been > 1, then A's price would have been higher and thus store B would be the best choice.