# Question 34 Stephanos spends all of his \$500 allowance on slices of pizza and gas for his pickup truck. He spends eighty percent of this on pizza and the rest on gas. Because of a shortage of gas, the price of gas increases by 40%. This makes his consumption of gas (measured in gallons) fall by 20%. If he keeps spending all his money on pizza and gas, what is the percentage change in his consumption of pizza (measured in slices)? does not change2% increase3% decrease4% increase1% decrease

Question

Question 34
Stephanos spends all of his \$500 allowance on slices of pizza and gas for his pickup truck. He spends eighty percent of this on pizza and the rest on gas. Because of a shortage of gas, the price of gas increases by 40%. This makes his consumption of gas (measured in gallons) fall by 20%. If he keeps spending all his money on pizza and gas, what is the percentage change in his consumption of pizza (measured in slices)?

does not change

2% increase

3% decrease

4% increase

1% decrease

Step 1

To calculate the percentage change in consumption of pizza.

Step 2

Total income of \$500 is spent either on pizza or on gas. 80% of the income is spent on pizza and the remaining 20% income is spent on gas.

Income spent on pizza = 80% of \$500 = \$400

Income spent on gas = Total income – Income spent on pizza ...

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