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melamori03 [73]
3 years ago
11

45 children attend preschool the number of two-year-olds is 1/2 the number of three-year-olds the number for your old is the sam

e as the number of three-year-olds
Mathematics
1 answer:
Mkey [24]3 years ago
6 0
There are 9 two-year-olds and 18 each of 3 and 4 year olds.

To solve this we could write and solve the equation below, letting x be the number of 3 and 4 year olds.

x/2 + x + x = 45
x + 2x + 2x = 90
5x = 90
x = 18

From here, we just divide 18 by 2 to get the number of 2 year olds.
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