SOLUTION: A student bought three textbooks for his physics,chemistry and mathematics courses. The hemistry text cost $8 more that the mathematics text. The physics text cost twice as much as

Question 712481: A student bought three textbooks for his physics,chemistry and mathematics courses. The hemistry text cost $8 more that the mathematics text. The physics text cost twice as much as the chemistery text. If the total bill was $156, what was the price of each book?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
three unknowns need three equations
c=m+8
m=c-8
p=2c
p+c+m=156
2c+c+c-8=156
4c-8=156
4c=164
c=41
p=82
m=33
check
41+82+33=156
156=156
ok

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