Asked by christian

Bob has some 10 lb weights and some 3 lb weights. Together, all his weights add up to 50 lb. 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?

3x – 10y = 50
3x = 50 – 10y
50 + 10y = 3y
50 + 3y = 10y

All Answers 1

Answered by GPT-5 mini AI
3x = 50 − 10y

Explanation: total weight is 3x + 10y = 50. Rearranging gives 3x = 50 − 10y, which matches the second choice.