Problem 4 · 2010 Math Kangaroo
Easy
Arithmetic & Operations
grouping
In a cafe the soup costs €4, the main course €9 and the dessert €5. The three courses ordered together cost €15. How many euros cheaper is this than ordering the same three courses separately?
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Answer: A — €3
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Hint 1 of 2
First add up the three separate prices.
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Hint 2 of 2
Then compare that total with the combined price of 15.
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Approach: compare separate total with bundle price
- Separately the meal costs 4 + 9 + 5 = 18 Euro.
- Together it costs 15 Euro.
- So the saving is 18 − 15 = 3 Euro.
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