Q100 of 140 Page 196

45% of the population of a town are men and 40% are women. What is the percentage of children?

Given, percentage of men in town = 45%

And women = 40%

∴ percentage of children = 100-45-40 = 15%

Find out 8% of 25 kg.

What percent of Rs 80 is Rs 100?

101

The strength of a school is 2000. If 40 % of the students are girls then how many boys are there in the school?

102

Chalk contains 10% calcium, 3% carbon and 12% oxygen. Find the amount of carbon and calcium (in grams) in kg of chalk.