Keta Sold tickets for her school play at $s6 for students, and $9 for adults. She sold 15 adult tickets and made a sales total o

Question

2 years ago

9

f $315. How many student tickets were sold?

1 answer:

kozerog [31] · Answer 1 · 2022-08-29T04:44:53+03:00

7 0

Answer

Let x be the number of tickets sold to adults and y the number sold to students:

x + y = 315. But we know that y was double x, then :

y = 2x

Plug the value of y (in the 1st equation) by 2x:

x+ 2x = 315

3x = 315

and x = 105 (which is the number of tickets sold to adults