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The school that Beth goes to is selling tickets to a spring musical. On the first day of ticket sales
the school sold 2 senior citizen tickets and 7 student tickets for a total of $106. The school took
in $208 on the second day by selling 3 senior citizen tickets and 14 student tickets. Find the price
of a senior citizen ticket and the price of a student ticket.

Sagot :

rspill6

Answer:

Student tickets are $14 each

Senior Citizen tickets are $4 each

Step-by-step explanation:

Let C be the price of a Senior Citizen ticket, and S be the price of a Student ticket.

We learn that on the first day:

2C + 7S = $106

On the second day:

3C + 14S = $208

We have two equations and two unknowns.  Rearrange either equation to isolate either C or S and use that value in the other equation.

I'll choose 2C + 7S = $106

C  = ($106 - 7S)/2

Use this in the other equation:

3C + 14S = $208

3(($106 - 7S)/2) + 14S = $208

($318 - 21S)/2 + 14S = $208

$159 - 10.5S + 14S = $208

3.5S = $49

S = $14  Student tickets are $14 each

Use this answer in either equation to find C:

C  = ($106 - 7S)/2

C  = ($106 - 7($14))/2

C = $4  Senior Citizen tickets are $4 each

====

Check to see if these values work in the original equations:

1.  2C + 7S = $106

2($4) + 7($14) = $106   ?

$8 + $98 = $106           ?   YES

2.  3C + 14S = $208  

    3($4) + 14($14) = $208  ?

     $12 +   $196    = $208  ?   YES

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