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The Lewis and Chousmith families are planning a zoo trip together. Adult tickets cost $29.95 and children's tickets cost $19.95. What will the total cost be for 4 adults and 7 children?
A$289.45
B$239.50
C$199.60
D$259.45
Answer & Solution
Correct answer: D. $259.45
1. Work out each ticket type separately, then add the two totals.
2. Adults: 4 times $29.95 equals $119.80.
3. Children: 7 times $19.95 equals $139.65.
4. Add the two amounts, lining up the decimal points: 119.80 plus 139.65 equals 259.45.
5. The trip will cost $259.45 in tickets.
6. $289.45 comes from swapping the counts and pricing 7 adults with 4 children, so match each price to the right group.
7. $239.50 is what you get after leaving one child out of the count.
8. $199.60 prices only 4 children instead of 7, dropping three tickets from the bill.
_Source: OpenStax Prealgebra (CC BY 4.0), Ch 5 "Decimals", section 5.2 Decimal Operations_
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