Question

A train travels 190km in 3 hours and 210km in 5hours. Find the average speed of train.

Answer 1

Answer:

Given:

Train travels 190 km in 3 hrs, 210 km in 5 hrs.

To find:

Average speed of the train

Concept:

You should always remember the fact that average speed of an object ia the ratio of total distance to the total time taken to cover the distance

$avg. \: v = \frac{distance}{time}$

Calculation:

$avg. \: v = \frac{(190 + 210)}{(3 + 5)}$

$= > avg.v = \frac{400}{8}$

$= > avg. \: v = 50 \: km {hr}^{ - 1}$

So, average speed of train is

50 km/hr.

Answer 2

Question :

A train travels 190 km in 3 hours and 210 km in 5 hours. Find the average speed of train.

Solution :

$\underline{\bold {Given:}}$

• The train travels 190 km in 3 hours.
• The train travels 210 km in 5 hours.

$\underline{\bold {To\:Find :}}$

• The average speed of the train.

Average speed is the ratio of total distance travelled to the total time taken.

$\boxed{\purple{Average\: speed=\frac {Total\:distance\:travelled}{Total\:time\:taken}}}$

$\implies Average\: speed=\frac {Total\:distance\:travelled}{Total\:time\:taken}\\\implies Average\: speed=(\frac {190+210}{3+5})\:km/h\\\implies Average\: speed= (\frac {400}{8})\: km/h\\\implies Average\: speed=50\: km/h$

$\boxed{\green{\therefore {The\: average \:speed\: of \:the\: train \:is\: 50 \:km/ h.}}}$