. Sarah wants to arrive at her friend’s wedding at
3:00. The distance from Sarah’s house to the wedding
is 95 miles. Based on usual traffic patterns, Sarah
predicts she can drive the first 15 miles at 60 miles per
hour, the next 10 miles at 30 miles per hour, and the
remainder of the drive at 70 miles per hour.
ⓐ How long will it take Sarah to drive the first 15 miles?
The answer is 15 minutes.
how do I set up the problem
is it the same as the other problem
15t + 60t =95 miles
It is a silly trick question the way it is worded
If you go at 60 mph, then you are going 1 mile per minute
so to go the first 15 miles would take 15 minutes.
No actual work needed for this.
Surely there are other parts to the question.
yeah thanks.
To set up the problem, you need to consider the speed Sarah will be driving and the distance she needs to cover. From the given information, Sarah predicts she can drive the first 15 miles at 60 miles per hour.
To find the time it will take for Sarah to drive the first 15 miles, you can use the formula:
Time (in hours) = Distance / Speed
For this specific part of the drive, the distance is 15 miles and the speed is 60 miles per hour. Plugging these values into the formula, we get:
Time = 15 miles / 60 miles per hour
To convert the answer to minutes, we can multiply by 60:
Time = (15 miles / 60 miles per hour) * 60 minutes per hour
Simplifying this equation gives us:
Time = 15 minutes
So, it will take Sarah 15 minutes to drive the first 15 miles of her journey to her friend's wedding.