Arithmetic Aptitudes › Time and Distance › Question #4715
MCQ Single Best Answer Not Set

QA guy traverses the first 150 kilometres of his journey at 80 kilometres per hour. Due to the inclement weather, he drives the remaining 150 kilometres at a speed of 60 kilometres per hour. What was his average speed for the first 300 kilometres of his journey?

ID: #4715 Time and Distance 286 views
Question Info
#4715Q ID
Not SetDifficulty
Time and DistanceTopic
Start Quiz on This Topic
 Your Answer

Choose the Best Option

Click any option to instantly check if you're correct.

  • A 68 km/hr ✔ ✖
  • B 82km/hr ✔ ✖
  • C 117km/hr ✔ ✖
  • D 15 km/hr ✔ ✖
Correct Answer: Option A

Explanation


To find the average speed for the first 300 km of the journey, we need to calculate the total time it took for the man to travel the first 300 km and then divide the total distance traveled by the total time.

The man traveled the first 150 km of his journey at a speed of 80 km/hr, so it took him 150/80 = <<150/80=1.875>>1.875 hours.

He also traveled the next 150 km of his journey at a speed of 60 km/hr, so it took him 150/60 = <<150/60=2.5>>2.5 hours.

Therefore, the total time it took the man to travel the first 300 km of his journey was 1.875 + 2.5 = <<1.875+2.5=4.375>>4.375 hours.

The total distance traveled was 300 km, so the average speed was 300/4.375 = <<300/4.375=68>>68 km/hr.
 Continue Practice
Previous Question Next Question
 Share

Share This Question

Challenge a friend or share with your study group.

 More from This Topic

Related MCQ Questions

An aeroplane flying 1000 kilometres covers the first 200 kilometres at 200 kilometres per hour, the second 200 Giri jogs 3 kilometres every Sunday. For the rest of the week, he jogs 1 mile more than the day before. Giri j A bicycle covers 800 metres in 4 minutes and 20 seconds. What is the cyclist's speed in kilometres per hour? Sagar was riding his bike north, when he turned left on a route 1 km long, and after another 2 kilometres, he A bicycle travelling at 20 km/hr crosses a bridge in 2 minutes. What is the bridge's length? A automobile travelling at 69% of its maximum speed travels 50 kilometres in 1 hour 40 minutes. What is the ca A running track has a perimeter of 735 metres. Peter and Tom begin walking in separate directions from the sam Two trains travelling at 40 kmph and 22 kmph in the same direction pass each other in one minute. What is the The T1 train departs Ahmedabad at 7 a.m. and arrives in Mumbai at 12 p.m. The T2 train departs Mumbai at 7 a.m