A customer buys $17.01 in gas and requests the following lottery tickets:
- One $5 lottery ticket
- Two $1 lottery tickets
- One $3 lottery ticket
He gives you two winning tickets to be redeemed: one for $5 and the other for $2. How much change would he receive from a $100 bill?
Answer (3)
He would receive $79.99 in change.
First, you should add together what he's spending:
17.01 + 5 + 1 + 1 + 3 = 27.01.
This is the total that he owes. Now, you should add together the winning tickets:
5 + 2 = 7.
Since he owes $27.01 and won $7, you should subtract 7 from his total:
27.01 - 7 = 20.01.
This is now his total. If he receives change from a $100 bill, then you subtract the total from 100:
100 - 20.01 = 79.99.
The customer gave you: -- $100 -- $5 winning ticket -- $2 winning ticket Total . . . $107
You gave the customer: -- $17.01 in the form of gas -- $5 in the form of a $5 lottery ticket -- $2 in the form of two $1 lottery tickets -- $3 in the form of a $3 lottery ticket Total . . . $27.01
In order to be even, you must give the customer another
($107 - $27.01) = $79.99 in change
The customer will receive $79.99 in change after buying gas and lottery tickets. His total spending is $20.01 after redeeming his winning tickets. The change from a $100 bill is calculated by subtracting $20.01 from $100.
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