Time Calculations and Speed Analysis

The video tutorial addresses a problem of commuting 18 miles to work with a speed limit of 65 mph. The speaker is 5 minutes late and decides to drive at 80 mph to save time. Using the equation D = R * T, the tutorial calculates the time taken at both speeds and determines the time saved by speeding. The time saved is converted from hours to minutes and seconds, revealing that the time saved is less than 5 minutes, meaning the speaker will still be late.

What is the distance of the commute to work mentioned in the problem?

• 15 miles

• 18 miles

• 20 miles

• 25 miles

Tags

CCSS.7.EE.B.4A

What speed does the driver decide to travel at to save time?

• 80 mph

• 75 mph

• 85 mph

• 70 mph

Tags

CCSS.6.EE.B.7

Which formula is used to calculate time in this problem?

• Time = Distance / Speed

• Distance = Speed x Time

• Time = Speed x Distance

• Speed = Distance / Time

Tags

CCSS.6.RP.A.3B

How is the time taken at 65 mph calculated?

• 65 mph / 18 miles

• 18 miles x 65 mph

• 65 mph x 18 miles

• 18 miles / 65 mph

What is the approximate time saved by speeding, in hours?

• 0.769 hours

• 0.519 hours

• 0.225 hours

• 0.619 hours

Tags

CCSS.4.MD.A.1

How many minutes are there in 0.519 hours?

• 31.14 minutes

• 30.14 minutes

• 32.14 minutes

• 33.14 minutes

Tags

CCSS.4.MD.A.2

Does speeding save enough time to avoid being late?

• No, it saves less than 5 minutes

• Yes, it saves exactly 5 minutes

• Yes, it saves more than 5 minutes

• No, it saves no time at all

Tags

CCSS.3.MD.A.1

What is the time saved in minutes and seconds?

• 3 minutes 9 seconds

• 3 minutes 6 seconds

• 3 minutes 7 seconds

• 3 minutes 5 seconds

Tags

CCSS.4.MD.A.1

How many seconds are there in 0.114 minutes?

• 5 seconds

• 7 seconds

• 6 seconds

• 8 seconds

Tags

CCSS.7.EE.B.4A

What is the final conclusion about the time saved by speeding?

• It is exactly enough to be on time

• It is not sufficient to be on time

• It is sufficient to be on time

• It makes no difference

Tags

CCSS.7.EE.B.4A