Question

A student has some $1 bills and $5 bills in his wallet. He has a total of 16 bills that are worth $44. How much of each type of bill does he have?

Answer 1

Step-by-step explanation:

Student has X amount of $1 bills and Y amount of $5 bills. At the same time, it is equal to $44 and 16 in terms of quantity. We can make an equation:

$1*X + $5*Y= $44 AND X+Y=16 ⇒ X=16-Y

16-Y+5Y=44

16+4Y=44

4Y=28

Y=7

X=16-Y=16-7=9

So, 9 bills of $1 and 7 bills of $5