Question

. A ship moves towards south for 4 hours at a speed 20 km/hour from a port, then it moves for 6 hours towards west at
a speed of 25 km/hour. If now it returns at a speed of 10km/hour straight way towards the port, then how much time
it will take to reach the port?



please tell me fast​

Answer 1

Answer:

Firstly he goes south for 4 hours at a speed of 20km/hr from a port

then he goes west for 6 hours at the speed of 25km/hr

Step-by-step explanation:

let the straight way =xkm

according to Pythagoras theorem

ab²+bc²=ac²

80²+150²=x²

x²=28900 ,x=√28900

x=170

time=170km/10km

17hours