Chapter 3.A, Problem 1QQ

To determine

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

$100\times \frac{200}{100}=200$

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.