The cost of math book is $6 and the cost of science book is $8
let
the cost of the math book = x
The cost of a science book is $2 more than the cost of math book. Therefore,
- cost of science book = x + 2
The cost of 4 math book is the same as the cost of three science books. Therefore,
- 4x = 3(x + 2)
- 4x = 3x + 6
- x = 6
Cost of math book = $6
Cost of science book = $8
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