SOLUTION: b) A family of 2 adults and 3 kids go and watch a movie. The price of an adult ticket is m and the price of a child ticket is n such that:
2m + 3n = 28 and n = 12 - m
I th
Algebra.Com
Question 379446: b) A family of 2 adults and 3 kids go and watch a movie. The price of an adult ticket is m and the price of a child ticket is n such that:
2m + 3n = 28 and n = 12 - m
I thought I would solve it by simply doing
2m+3(0)=28 and then solve for n the same but this is not working out.
2m=28
m=14
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
You are assuming that n=0, which is not the case. What you really need to do is use the n=12-m to substitute into the first equation in place of the n like this:
n=12-m
2m+3n=28
2m+3( ) = 28
2m+3(12-m)=28
Now, solve for m:
2m + 36-3m = 28
36-m=28
-m=28-36
-m=-8
m=8
Now, substitute m=8 into the n equation:
n=12-m
n=12-8
n=4
Dr. Rapalje
RELATED QUESTIONS
At a movie theater a family buys 2 adult tickets and 1 child ticket for a total of... (answered by JulietG)
A movie theater advertises that a family of two adults, one student, and one child... (answered by Theo,ikleyn)
fair tickets for 2 adults and 3 children cost $34. An adult ticket costs $2 more than a... (answered by Fombitz,ewatrrr)
7 people go to movie. the child ticket is half the price of adult. 30 dollars was total.... (answered by lwsshak3)
The walker family are going swimming. The cost of an adult ticket is 'a' and the cost of... (answered by Fombitz)
the price of a cinema ticket is 10000 for an adult and 7000 for a child 60 people... (answered by josgarithmetic)
How to solve this problem
Johnson family bought 4 adult tickets and 2 child... (answered by ikleyn)
A zoo ticket for an adult cost twice the price of a child's ticket. A senior ticket is $2 (answered by richwmiller)
Brianna's family spent $134 on 2 adults tickets and 3 youth tickets at an amusement park. (answered by richard1234)