A ship sailed 30 kilometers in 1 1/2 hours. What is was its rate in kilometers per hour? 1) 20
2)30
3)45
4)90
5)Not enough information is given.

20km/hr

Step-by-step explanation:

Given that a ship sailed 30km in one and a half hours. We need to find out the rate of ship in kilometres/hour . The rate is also called Speed.

Speed:- Distance travelled per unit time is called Speed .

Here , according to Question,

Distance = 30 km

Time = 1½ hrs .

We know that ,

Subsequently ,

Substitute the respective values ,

We can write 1.5 as 3/2 , therefore ,

Simplify the RHS ,

Hence the Rate/Speed of the ship is 20km/hr .

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