the local chess club has 60 member. 24 of them are younger than twenty. what percent of members of the chess club are younger than 20

You can first write it as a fraction. 24 out of the 60 members are younger than twenty.

24/60

Simplify by dividing the numerator and denominator by the GCF, 12:

2/5

Percentages are parts of 100, so we want to get 100 in the denominator to find the percentage. 100 / 5 = 20, multiply numerator and denominator by 20:

40/100

This is 40 parts of 100 or 40%.

So 40% of the members of the chess club are younger than 20.