Question

if a person covers xkm in 30 minutes, write the algebraic expression for the distance covered by him in 1 hour

Answer is = 2x km in a hour.

please explain it in the process. Fast. ​
It's very urgent..​

Answer 1

Answer:

Unitary method -

30 minutes --> x Km

1/2 hour --> x Km ( As 30 minutes = 1/2 hour )

1 hour --> 2x Km ( Cross multiply )

This is just like imagine you go 5 metre in 1 minute so in 2 minutes you will go twice the distance that is 10 metres,

Similarly as 1 hour is double of 30 minutes so distant covered is also double of the distance covered in 30 minutes