Question

Help me solve for this:

75% of the people at a stadium are adults and the rest are children. 30% of the children are girls. If there are 2100 people at the stadium, write an equation to demonstrate how many boys there are at the stadium and solve.

Answer 1

You would do this:

75%/100% = x/2100...solve...x= 1575 adults.
Therefore, there are 525 kids.
Your next equation is this:
If 30% of 525 kids are girls, then 70% of 525 kids are boys:

70/100 % = x/525.....solve....x=368 kids are boys.