Math, asked by bhavik54, 1 year ago

the average age of 4 members of a family is 20 years if the age of grandmother is included then the average is increased by 9 years then find the age of grandmother

Answers

Answered by shekharmittal90

4

Step-by-step explanation:

20 x 4 =80

29×5=145

145-80=65

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