Answer:
Weight of 4 boxes = 120 pounds
Explanation:
Given : 3 boxes of baseball cards weigh 90 pounds.
To find : How many pounds do 4 boxes weigh.
Solution : We have given
Weight of 3 boxes = 90 pound.
Weight of 1 boxes =
.
Weight of 1 boxes = 30 pounds.
So ,
Weight of 4 boxes = 30 * 4 pounds.
Weight of 4 boxes = 120 pounds.
Therefore, Weight of 4 boxes = 120 pounds