Question

1)In a class of25 students, there are15 boys. What is the percentage of girls ?

2)what percentage of 50 is20 ?

3). The picnic spot is 55 km away from a school. The first stop is taken at 22km from the school . What percentage of the distance is remaining to reach the destination?

4) true or false

The distance between two places is10 km . A person travel 4km ,which is 50% of the entire journey?

5) According to survey conducted in a city, 25%were doctors ,30% Engineers,15%businessman and rest were illiterates . What is the number of illiterates if the total population of the city is5000?

Answer 1

1)per cent" literally means "out of 100," so whenever you see "what percent," immediately write down "x/100."

You know that there are 15 boys out of 25 kids total, so set up your proportion as:

15/25 = x/100. Then you cross-multiply:

25x = 1500. Divide by 25 and you get...

60. In other words, 15 out of 25 would be 60 out of 100, or 60%.

And if the boys make up 60%, then the girls have to be the remaining...

40%

Hope this helps!
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