SOLUTION: busload of campers stopped at a dairy for ice cream. They ordered 87 cones, some are soft serve at 2.00 and rest is hard pack at .75. if the total was 100.25 how many of each?

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Question 978783: busload of campers stopped at a dairy for ice cream. They ordered 87 cones, some are soft serve at 2.00 and rest is hard pack at .75. if the total was 100.25 how many of each?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=87,
2*x+0.75*y=100.25
x=87-y
2*(87-y)+0.75*y=100.25
174-2y+0.75*y=100.25
-1.25*y=-73.75
y=59.0
x=87-y
x=28 at 2 and y=59 at 0.75
check
28+59=87
2*x+0.75*y=100.25
2*28+0.75*59=100.25
56+44.25=100.25
100.25=100.25
ok
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