Pre-orders for the year cost $38 eac, while full pricce costs $45 each. if 24 students in mr. hillmans homeroom purchased yearbooks for a total of $975, how many students pre-ordered and how many bought their yearbook at full price ?

15  students pre-ordered and 9  students bought their yearbook at full price.

Step-by-step explanation:

Let x be the number of students pre-ordered \and y be the number of students  bought their yearbook at full price .

As per given , we have

Pre-orders for the year cost $38 each, while full price costs $45 each.

If 24 students in Mr.Hillmans homeroom purchased yearbooks for a total of $975.

i.e.  ...(i)

 ...(ii)

Multiplying equation (i) by 38 , we get

 ...(iii)

Subtracting (iii) from (ii) , we get

Put value of y in (i) , we get

Hence, 15  students pre-ordered and 9  students bought their yearbook at full price.

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