3 boxes of baseball cards weigh 90 pounds. How many pounds do 4 boxes weigh
2 answers:
Answer:
Weight of 4 boxes = 120 pounds
Step-by-step 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
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Answer:
Step-by-step explanation:
Let the two numbers be x and y
So we have:
using the elimination method, add the two equations together:
solve for x:
substitute our value for x back into the first equation we made:
therefore,