Box a is by 2 lb lighter than box b and 5 times lighter than box c. boxes a and c together are 4 times heavier than box b. find the weight of each box.

First Assign A Variable To Box A And Subsequently Fill The Box B & Box C

Box A = x
Box B = x+2
Box C = 5x

Now Using The Rest Of The Information Make An Equation Like So.

4(x+2) = 5x + x

4x + 8 = 6x

8 = 2x

x = 4

Now Go Back To The Top And Insert x

Box A = x = 4
Box B = x+2 = 6
Box C = 5x = 20

The answer is 9.7 cm