Question

The equation 12x + 15y = 390 represents the total revenue during a one-day fundraiser. In the equation, x represents the

number of youth T-shirts sold, and y represents the number of adult T-shirts sold. If there were 10 youth T-shirts sold,
how many adult T-shirts were sold?
18 T-shirts
20 T-shirts
24 T-shirts
45 T-shirts

Answer 1

If there were 10 youth T-shirts sold, then there were 18 adult T-shirts sold.

Answer 2

12x10=120

So, 120+15y=390

390-120=270

So, 15y=270
Therefore, y=18
18 adult t-shirts were sold