Question

herman and his dad are leaving early in the morning for his lacrosse tournament. their house is 210 miles from the tournament. they plan to stop and eat after 2 hours of driving, then complete the rest of the trip. hermans dad plans to drive at an average speed of 60 miles per hour. how long will the second part of the trip take? write your answer as a whole number or a decimal. hours

Explanation:

Step1: Calculate distance covered in 2 hours

The speed is 60 miles per hour. Using the formula $d = s\times t$ (where $d$ is distance, $s$ is speed and $t$ is time), for $s = 60$ mph and $t = 2$ hours, we have $d=60\times2 = 120$ miles.

Step2: Calculate remaining distance

The total distance is 210 miles. After driving 120 miles, the remaining distance $d_{r}=210 - 120=90$ miles.

Step3: Calculate time for second - part of trip

Using the formula $t=\frac{d}{s}$ again, with $d = 90$ miles and $s = 60$ mph, we get $t=\frac{90}{60}=1.5$ hours.

Answer:

1.5