Question

mple 4: A ship is moving at an average speed of 60 km/h. How much distance will it cover in 20 minutes? How much time will it take to cover 90 km? lution:​

Answer 1

Answer:

1) distance covered in 20 min = 20 km

2) time required to cover 90 km = 1 hr 30 min = 90 minutes

Step-by-step explanation:

given

1) speed=60 km/hr= 60/60= 1 km/minute

Time= 20 minutes

speed = Distance/Time

Distance= speed*Time

= 1*20= 20 km

distance covered in 20 min = 20 km

2) speed=60 km/hr= 60/60= 1 km/minute

Distance= 90 km

speed = Distance/Time

Time= Distance/Speed

= 90/60

= 1.5 hrs

Time required to cover 90 km = 1 hr 30 min = 90 minutes

Answer 2

As per the details provided in the question.

In the above question it is given that,

The given data is A ship average speed 60km/hr.

We have to find the distance cover in 20min. and time taken by ship to cover 90km.

Here we are going to use the formula of speed is equal to distance upon time.

Thus, calculating the distance cover in 1 minutes is,

$= \frac{60}{60} \\ = 1$

the speed in minutes is 1km/min

So the distance cover in 20min.

$1 \times 20 = 20km$

Therefore the time for 90km is,

$time = \frac{distance}{speed}$

$= \frac{90}{60} \\ = 1.5hr$

Hence the ship will cover 20km in 20min and take 1,5hr to cover 90km.