Question

The average age of four children is 11 years if the age of three children are 9 years 12 years and 10 years find the age of fourth child​

Answer 1

Step-by-step explanation:

Let X be the total of the 3 children’s ages.

Let X be the total of the 3 children’s ages.Let Y be the 4th child’s age.

Let X be the total of the 3 children’s ages.Let Y be the 4th child’s age.X/3 = 8.5

Let X be the total of the 3 children’s ages.Let Y be the 4th child’s age.X/3 = 8.5X = 25.5

Let X be the total of the 3 children’s ages.Let Y be the 4th child’s age.X/3 = 8.5X = 25.5Next:

Let X be the total of the 3 children’s ages.Let Y be the 4th child’s age.X/3 = 8.5X = 25.5Next:(X+Y)/4 = 10

Let X be the total of the 3 children’s ages.Let Y be the 4th child’s age.X/3 = 8.5X = 25.5Next:(X+Y)/4 = 10(25.5 + Y)/4 = 10

Let X be the total of the 3 children’s ages.Let Y be the 4th child’s age.X/3 = 8.5X = 25.5Next:(X+Y)/4 = 10(25.5 + Y)/4 = 1025.5 + Y = 40

Let X be the total of the 3 children’s ages.Let Y be the 4th child’s age.X/3 = 8.5X = 25.5Next:(X+Y)/4 = 10(25.5 + Y)/4 = 1025.5 + Y = 40Y = 14.5, the age of the 4th child

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Answer 2

Answer:

This is ur answer

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