A theater charges $9 for an adult ticket and $4 for a child ticket.
All 1020 tickets were sold and $7680 of revenue was brought in.
How many adult tickets were sold?

Question

fauithfulldiamond fauithfulldiamond

10-03-2017
Mathematics

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A theater charges $9 for an adult ticket and $4 for a child ticket.
All 1020 tickets were sold and $7680 of revenue was brought in.
How many adult tickets were sold?

Respuesta :

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Аноним Аноним · Answer 1 · 2017-03-10T17:38:12+01:00

Аноним Аноним

10-03-2017

a = adult
c = children

a + c = 1020 so a= 1020 - c
9a + 4c = 7680

substitute a= 1020 - c into 9a + 4c = 7680

9a + 4c = 7680
9(1020 - c) + 4c = 7680
9180 - 9c + 4c = 7680
-5c = -1500
c = 300

a= 1020 - c
a = 1020 - 300
a = 720

answer: 720 adult tickets were sold

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Аноним Аноним · Answer 2 · 2017-03-12T02:47:57+01:00

Аноним Аноним

12-03-2017

720 adult tickets! Hope it helped

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A theater charges $9 for an adult ticket and $4 for a child ticket. All 1020 tickets were sold and $7680 of revenue was brought in. How many adult tickets were sold?

Respuesta :

Otras preguntas

A theater charges $9 for an adult ticket and $4 for a child ticket.
All 1020 tickets were sold and $7680 of revenue was brought in.
How many adult tickets were sold?