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Setler [38]
3 years ago
6

a science museum offers tours for school groups with 20 or more students. the tour costs $100 plus $3.50 for every student in ex

cess of 20 students. a school group pays $345 for the tour.
Mathematics
1 answer:
Alexandra [31]3 years ago
5 0
I think the answer would be 90 students were taken on the trip. I may be wrong, so wait for more answers to come in!

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IgorLugansk [536]
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disa [49]

For this case we propose a system of equations:

x: Let the variable representing the quantity of Granny Smith apples

y: Let the variable representing the number of Gala apples

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From the first equation we have to:

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replacing in the second equation:

0.25 (19-y) + 0.30y = 5.10\\4.75-0.25y + 0.30y = 5.10\\4.75 + 0.05y = 5.10\\0.05y = 5.10-4.75\\0.05y = 0.35\\y = \frac {0.35} {0.05}\\y = 7

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On the other hand:

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Answer:

Carl bought 7 Gala apples and 12 Granny Smith apples

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