Tamir buys tickets to two concerts this season. one has a face value of $32.50, and one has a face value of $26.50. he uses a coupon and gets both tickets at 1/4 off. if he pays with a $50 bill, how much change should tamir receive?

Hi there! 

We know that Tamir buys two tickets to 32,50 dollars and 26,50 dollars. We also know that he gets 1/4 less price because he has a coupon. 

We know that 1/4 is the same as 25 % (percentage).

We must first find out how much the tickets cost with the coupon added.

32,50 / 100 = 0,325
Now we know that 1 % of 32,50 is 0,325. The ticket are reduced in 1/4 or 25 %, so we have to multiply 0,325 with 25 %.
0,325 x 25 =  8,125

Now we know that Tamir got 8,125 dollar reduced in his price for the one ticket. 
32,50 - 8,125 = 24,375
We do now know that the one ticket costs 24,375 dollars. 

We do the same operations with the another price:
26,50 / 100 = 0,265 (1 % of price)
0,265 x 25 = 6,625

26,50 - 6,625 = 19,875

We do now know that the one ticket costs 24,375 dollars and the another ticket costs 19,875 dollars. We add these two numbers:
24,375 + 19,875 = 44,25 dollars

We do now know the total price he paid. We must now subtract 50 dollars (total money he had) with 44,25 dollars (total price he paid):
50 - 44,25 = 5,75 dollars

Tamir should receive 5,75 dollars after paying with a 50 dollar-bill. 
Hope this helps!