Concept explainers
The price of a four-star meal, only $100 per couple decades ago, has since increased 200%. The current price of a four-star meal is
a) $200
b) $300
c) $400
Answer to Problem 1QQ
Solution:
The price of a four-star meal, only $100 per couple decades ago, has since increased 200%. The current price of a four-star meal is $300.
Explanation of Solution
Suppose the price of the four-star meal, only $100 per couple decades ago, has since increased 200%
Since, decades ago, the price of the four-star meal was only $100 per couple, and the price of a four-star meal increased 200%
Therefore, the amount that increases is given by
The current price of a four-star meal can be obtained by adding the old price and the increased price that is
$100+$200=$300
Hence, the current price of the four-steal meal is $300.
Therefore, the option (b) is correct.
Conclusion:
The price of a four-star meal, only $100 per couple decades ago, has since increased 200%. The current price of a four-star meal is $300.
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