Aptitude Discussion

Q. |
Jim travels the first 3 hours of his journey at 60 mph speed and the remaining 5 hours at 24 mph speed. What is the average speed of Jim's travel in mph? |

✖ A. |
42 mph |

✖ B. |
36 mph |

✔ C. |
37.5 mph |

✖ D. |
42.5 mph |

**Solution:**

Option(**C**) is correct

\(\text{Average speed}=\dfrac{\text{Total Distance}}{\text{Time}}\)

Total distance travelled by Jim = Distance covered in the first 3 hours + Distance covered in the next 5 hours.

Distance covered in the first 3 hours = $3×60=180$ miles

Distance covered in the next 5 hours= $5×24=120$ miles

Therefore, total distance travelled = $180+120=300$ miles.

Total time taken = $3+5=8$ hours.