SOLUTION: A store owner purchased 20 halogen light bulbs and 30 fluorescent light bulbs for a total cost of $630. A second purchase, at the same prices, included 30 halogen bulbs and 10 fluo

Question 473902: A store owner purchased 20 halogen light bulbs and 30 fluorescent light bulbs for a total cost of $630. A second purchase, at the same prices, included 30 halogen bulbs and 10 fluorescent bulbs for a total cost of $560. Find the cost of a halogen bulb and a fluorescent bulb.
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
20m+30n=630
30m+10n=560
90m+30n=1680
70m=1050
m=15
n=11
Halogen bulbs cost $15 each. Fluorescent bulbs are $11 each..
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