Question

7 meters/ 20 minutes= x cm/ 2 hours

Answer 1

x = 4200

Explanation:

It is given 7 meters in 20 minutes.

We have to convert this ratio into "x" centimeters in 2 hours.

First, lets convert the given ratio to 2 hours (so time matches).

7 meters in 20 minutes

7 * 3 = 21 meters in 20 * 3 = 60 minutes (1 hr)

So,

21 meters in 1 hr

That would mean:

21 * 2 = 42 meters in 1 * 2 = 2 hours

Now, we have:

42 meters in 2 hours

The time is same, now we just need to convert 42 meters to centimeters.

we know 100 cm = 1 meter, so

42 m * 100 = 4200 centimeters

Thus,

x = 4200 (cm)