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# Proportions

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Last month I wrote down the following facts while on my delivery job. I work 5 days a week for 8 hours a day. Last month I worked 20 days. My truck gets 21 miles per gallon. I drive at an average speed of 45 miles per hour. I listen to 104.5 on the radio. I drive about 350 miles per day, Gas costs 3.499 per gallon. How much did I spend on gas last month

Jun 19, 2019

$$\text{3.499 dollars per gallon}\,\times\,\frac{\text{350 miles per day}}{\text{21 miles per gallon}}\,\times\,\text{20 days}\ =\ \frac{3.499\,\times\,350\,\times\,20}{21}\ \text{dollars}\ \approx\ 1166.33\ \text{dollars}$$_