Vinh can buy approximately 12.00 rides using the $39 he adds to his subway fare card.
Here's how you can use the unit rate to find the answer:
1. Identify the given information:
Vinh adds $39 to his subway fare card.
The unit rate is $3.25 per ride.
2. Set up the equation:
Let x be the number of rides Vinh buys. The total cost of the rides is equal to the amount of money he adds to his card. We can express this as:
Total cost = number of rides * unit rate per ride
3. Substitute the given information:
Total cost = $39
Number of rides = x
Unit rate per ride = $3.25
Therefore, the equation becomes:
39 = x * 3.25
4. Solve for x:
Divide both sides of the equation by 3.25:
x = 39 / 3.25
x ≈ 12.00 rides
5. Explain the solution:
Therefore, Vinh can buy approximately 12.00 rides using the $39 he adds to his subway fare card.
Complete question:
Vinh adds $39 to his subway fare card. How many rides does vinh buy? The unit rate is $ 3. 25. Explain how you can use the unit rate for rides per dollar to find the answer