.
From the condition, 9 + 12 = 21 are 14% of the entire children population in the daycare program:
0.14x = 21.
Then x = = 150 is the entire children population.
Solved.
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On percentage problems, see the lessons
- Percentage problems
- Percentage word problems (Type 1 problems, Finding the Part)
- Percentage word problems (Type 2 problems, Finding the Rate)
- Percentage word problems (Type 3 problems, Finding the Base)
- More complicated percentage problems
- Problems on percentage that lead to unexpected results
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