A courier travels from the office to a client's location 40 miles away. The trip there tak… — Armed Services Vocational Aptitude Battery (ASVAB)

A courier travels from the office to a client's location $40$ miles away. The trip there takes $1$ hour. The return trip along the same route takes $4$ hours due to heavy traffic. What is the courier's average speed for the entire round trip?

A
$8$ mph
B
$10$ mph
$16$ mphCevap
D
$25$ mph

Cevap

16

mph

The correct answer is found by dividing the total distance for the round trip (

40

miles outbound +

40

miles return =

80

miles) by the total time taken (

1

hour +

4

hours =

5

hours). This gives an average speed of

80 \div 5 = 16

mph.

Adım Adım Çözüm

Calculate the total distance for the round trip.

40 + 40 = 80

miles

Average speed calculation requires the total distance traveled during the entire journey.

Calculate the total time for the round trip.

1 + 4 = 5

hours

Average speed calculation requires the total time elapsed.

Divide the total distance by the total time to find the average speed.

80 \div 5 = 16

mph

The formula for average speed is Total Distance divided by Total Time.

Anahtar Kavram

The average speed for a round trip is calculated by dividing the total round-trip distance by the total time taken. It is not the simple arithmetic average of the speeds for each leg.

Soru

Cevap

Adım Adım Çözüm

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