Question

Part of the proceeds from a garage sale was ​$275 worth of ​$5 and ​$20 bills. If there were 5 more ​$5 bills than ​$20 ​bills, find the number of each denomination.

Answer 1

Suppose $20 bill=x
Then $5 bill=x+5
Equation for the given case is:
20x+5(x+5)=275
20x+5x+25=275
25x+25=275
25x=250
x=10 (Which is number of $20 bill)
Now number of $5 bill= 10+5 =15

Answer: Number of $20 bill= 10 and Number of $5 bill= 15