igwynnlee
Answered

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the mean age of five boys is 16 years. if the ages of four of them be 15 years, 18 years, 14 years & 19 years then find the age of the fifth boy.​

Sagot :

Given :

Mean = 16

To find :

Age of the fifth boy

So,

[tex]x + 15 + 14 + 18 + 19 = 5 \times 16[/tex]

[tex] = >x + 66= 80[/tex]

[tex] = > x = 80 - 66[/tex]

[tex] = > x = 14[/tex]

Hence, the age of the fifth boy is 14 years

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