Math, asked by surendrasinghpal2008, 11 months ago

The average age of 10 children is 9 years 9 months . The average age of 9 children is 8 years 11 months . what is the age of tenth child ?
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Answers

Answered by DeepaShahi
2

The average age of 10 children = 9 years 9 month

= 9*12+9= 117 months

The total age of 10 children = 117 months * 10

= 1170 months

The average age of 9 children= 8 years 11 months

= 8*12+11 = 107 months

Their total age = 107 * 9 = 963 months

The age of the tenth child = (1170 - 963) months

= 107 months

=8 years 11 months

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