Question

Question # 35
Revisit
John left home and drove at the rate of 45 mph for 2 hours. He stopped for lunch then drove for another 3 hours at
the rate of 55 mph to reach his destination. How many miles did John drive?​

Answer 1

Answer:

• John drove 255 miles.

Step-by-step explanation:

Given that:

• John left home and drove at the rate of 45 mph for 2 hours.
• He stopped for lunch then drove for another 3 hours at the rate of 55 mph to reach his destination.

To Find:

• How many miles did John drive?

We know that:

• Distance = Speed × Time

Finding the distance covered by John before lunch:

We have.

• Speed = 45 miles/hour
• Time = 2 hours

• Distance = (45 × 2) miles
• Distance = 90 miles

Finding the distance covered by John after lunch:

We have.

• Speed = 55 miles/hour
• Time = 3 hours

• Distance = (55 × 3) miles
• Distance = 165 miles

Finding the total distance covered by John:

Total distance = Distance covered before lunch + Distance covered after lunch

• Total distance = 90 miles + 165 miles
• Total distance = 255 miles

∴ Total distance covered by John = 255 miles

Answer 2

Answer:

Given :-

John left home and drove at the rate of 45 mph for 2 hours. He stopped for lunch then drove for another 3 hours at the rate of 55 mph to reach his destination

To Find :-

Miles that John drive

Solution :-

Case 1 -

Distance = Speed × Time

Distance = 45 × 2

Distance = 90 mph

Case 2 -

Distance = Speed × Time

Distance = 55 × 3

Distance = 165 mph

Distance covered by John = 90 + 165

Distance covered by John = 255 miles