Answer:
B
Step-by-step explanation:
1+1=2
But 2x has to stay the same
It is d 1/3
That I saw the answer for your question
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.
87 ⇒ 90
34 ⇒ 30
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121 120
