Question

A delivery boy started from his office at 10 a.m. to deliver an article. He rode his scooter at a speed of 32 km / h. He delivered the article and waited for 15 minutes to get the payment. After the payment was made, he reached his office at 11:25 a.m., travelling at a speed of 24 km / h. Find the total distance travelled by the boy.

• A. 35 km
• B. 40 km
• C. 32 km
• D. 30 km

Answer 1

Answer:

C. 32 km

Solution: Given: Speed of To and Fro journey is 32 kmph, 24 kmph Waiting time is 15 mins = ¼ hr Journey time is 1 hr 25 min = 17/12 hrs Formula Used: Time = Distance/Speed Calculation: Let the distance from office to delivery location be d ⇒ Total time = d/32 + d/24 + ¼ = 17/12 ⇒ (d/8)(7/12) = 7/6 ⇒ d = 16 km ∴ Total distance travelled = 2d = 32 km