Answer: 1) 2.5 hours, 2) 130 miles
Step-by-step explanation:
To solve both of these problems, let us remember the formula:
Distance = (speed) × (time)
1) Plug in the numbers into the formula:
150miles = (30miles/hour) × (time)
Divide both sides by 30miles/hour to solve for time:
150miles/(30miles/hour) = time
Simplify:
2.5hours = time
2) Susan's driving is broken into two parts with different speeds and time.
Solve the distance for first drive by plugging numbers into formula:
Distance = (40miles/hour) × (2hours)
Multiply:
Distance of first drive = 80miles
Solve for distance of second drive:
Distance = (50miles/hour) × (1hour)
Multiply:
Distance of second drive = 50miles
Add distance of first drive and second drive:
80miles + 50miles = 130miles
