Answer:
120 lb
Step-by-step explanation:
3 boxes ----> 90 lb
1 box -------> 90 ÷ 3 = 30 lb
4 boxes -------> weight of 1 box x 4 = 3 x 4 = 120 lb
Answer:
120 pounds
Step-by-step explanation:
if 3 boxes together weigh 90 pounds then each box weighs 30 pounds because 30×3=90 (30+30+30) and if you multiply 30×4 you get 120 because 30+30+30+30=120
90÷3=30
30×4=120
