Answered

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The average age of 4 boys is 32. The average age of three of them is 30. What is the age of the fourth boy? ​

Sagot :

Answer:

The age of the fourth boy = 38

Step-by-step explanation:

We can find the age of the fourth boy by finding out the difference between the total of 4 boys and the total of the 1st three boys:

[tex]\begin{aligned}\\\text{total of 4 boys}&=\text{total of 3 boys + 4th boy}\\4\times 32&=3\times 30+\text{4th boy}\\\text{4th boy}&=128-90\\&=38\end{aligned}[/tex]

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