Question

Bob has some 10 lb weights and some 3 lb weights. Together, all his weights add up to 50 lbs. If x represents the number of 3 lb weights and y represents the number of 10 lb weights, which equation can be used to find the number of each type of weight Bob has?

Answer 1

there are many different equations that could be used in this scenario, I will list a couple.
10x+2y
5y

Answer 2

The equation would be : 10y + 3x = 50

Hope this helps :)