Question

What percent of20 Km is 5m

Answer 1

Answer:

1 km = 1000 m

20 km = 20000 m

Required percentage

$\: \: \: \: \: ( \frac{5}{20000} \times 100)\% \\ = \frac{1}{40} \% \\ = (\frac{1 \times25 }{40 \times 25} )\% \\ = \frac{25}{1000}\% \\ = 0.025\%$

Answer 2

Given:

20 km and 5m

To find:

The per cent of 20km  that would give 5m

Solution:

The required per cent is 0.025.

Let the required per cent be X.

We will calculate X% of 20km which would be equal to 5m.

Also, we will have to first convert the 20km into metres to calculate the required per cent.

So, 1km= 1000m

20km in metres=20×1000

=20,000 m

Now, we know that X% of 20,000 is equal to 5.

Using the values,

X% of 20,000=5

X/100×20,000=5

200X=5

X=5/200

X=1/40

X=0.025%

Therefore, the required per cent is 0.025.