Question

A ship travelled the first part of the journey In 2 hours. It travelled the remaining 90 km of the journey at an average speed of 30 km/hr . the total distance travelled by the ship was 162 km. find the average speed of the ship for the whole journey. ​

Answer 1

Answer:

32.4 km/hr.

Step-by-step explanation:

Hours taken to cover 90 km (2nd part of journey) at 30 km/hr speed = 3 hours.

Hours taken to cover first part of the journey = 2 hours.

Total time taken to for the journey = 5 hours.

So the ship traveled 162 km in 5 hours.

Therefore the average speed of the ship = 162 km / 5 hr = 32.4 km/hr.