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17-09-2020
Mathematics

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2/3 of the children in the fourth grade class are girls. If there are 18 girls, what is the total number of children in the class? State the unknown variable and write the equation.

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17-09-2020

Answer:

Let x be the total number of children in the class.

Two–thirds of the children in the fourth–grade class are girls, and there are 12 girls so that

(2/3)x = 12

x = 12/(2/3)

= 12(3/2)

= 18.

The total number of children in the class is 18.

Step-by-step explanation:

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