Question

There are 820 people at a stadium. 65% of them are adults, 20% of them are boys, and the rest are girls. How many girls are there at the stadium?

Answer 1

Total number of girls = 123

Explanation:

It is given that,

There are 820 people at a stadium. 65% of them are adults, 20% of them are boys

To find the percentage of girls

total people = 100%

The percentage of girls = 100 - ( percentage of adults + percentage of boys)

The percentage of girls = 100 - (65 + 20 ) = 100 - 85 = 15%

Therefore percentage of girls = 15%

To find number of girls

The number of girls = 15% of total people

number of girls = (15 x 820)/100 = 123

Therefore total number of girls = 123

Answer 2

Final answer is 123.

Explanation:

Given that there are 820 people at a stadium.

Out of which 65% are adults, 20% of them are boys, and the rest are girls.

Now we need to find about how many girls are there at the stadium?

We know that total percent can be 100%

So percentage of girls in the stadium = (Total %) - (Adults %) - (Boys %)

= 100% - 65% - 20%

= 100% - 85%

= 15%

Then total number of girls at the stadium = 15% of 820

= 0.15 ( 820)

= 123

Hence final answer is 123.