thirty tickets were sold for a concert, some at 60 cent and the rest is at $1. If the total was raised to $22, how many had the

Question

erica [24]

2 years ago

14

thirty tickets were sold for a concert, some at 60 cent and the rest is at $1. If the total was raised to $22, how many had the

cheaper tickets.

Mathematics

1 answer:

katrin [286] · Answer 1 · 2023-02-16T04:37:23+03:00

Answer:

20

Step-by-step explanation:

To solve this question we can use a system of linear equations. The 2 equations should represent- 1) the number of total tickets sold and 2) the total amount raised. So, the two equations look like this (in this situation, let x stand for the cheaper tickets and y for the more expensive ones).

x+y=30
0.6x+1y=22

Then, there are multiple ways to solve this including graphing, elimination, and substitution. In my opinion, substitution is the best for this situation.

Firstly, isolate the y variable in the first equation