You have $20\$$ to spend on taxi fare. The ride costs $5\$$ plus $2.50$ per kilometer. What is the maximum distance, in kilometers, you can ride for $20\$$

Full solution

Q. You have

20\$

to spend on taxi fare. The ride costs

5\$

plus

2.50

per kilometer. What is the maximum distance, in kilometers, you can ride for

20\$

Subtract initial cost: First, we need to subtract the initial cost of the ride from the total amount of money available to spend on the taxi fare. $\newline$ Calculation: $\$20 - \$5 = \$15$
Determine kilometers covered: Next, we need to determine how many kilometers can be covered with the remaining money. Since the cost per kilometer is $\$2.50$ , we divide the remaining money by the cost per kilometer. $\newline$ Calculation: $\$15 \div \$2.50 = 6$ kilometers
Check calculation: Finally, we check to ensure that the calculation is correct and that we have answered the question prompt. $\newline$ Calculation check: $\$5 + (6 \, \text{km} \times \$2.50) = \$5 + \$15 = \$20$