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Calculate the following percentages:

1. What percentage is 65 marks out of 400 marks?

2. What percentage of 2 km is 500 m?

3. What percentage of 16 minutes is 40 seconds?

Answer :

1. 65 marks out of 400 marks is 16.25%.

2. 500 m is 25% of 2 km.

3. 40 seconds is 4.17% of 16 minutes.

1. To find the percentage of 65 marks out of 400 marks, we use the formula:

Percentage = (Part / Whole) * 100.

Here, Part is 65 and Whole is 400.

So, we calculate:

(65 / 400) * 100 = 0.1625 * 100 = 16.25%.

2. To determine what percentage of 2 km is 500 m, we first convert 2 km into meters:

2 km = 2000 m.

Now we use the same percentage formula:

(500 / 2000) * 100 = 0.25 * 100 = 25%.

3. For finding what percentage 40 seconds is of 16 minutes, we first convert 16 minutes into seconds:

16 minutes = 16 * 60 = 960 seconds.

Now applying the percentage formula:

(40 / 960) * 100 = 0.04167 * 100 = 4.17%.

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