Question

solve :-
que no 23 or 24 me se koi bhi ek agar dono aate ho to dono ​

Answer 1

HERE IS THE ANSWER MATE of 24th question

Answer 2

Answer:

23.   We know that ,

Average = total sum of items/number of items

Here, average age of Shikha and Amit is 48 years.

So,we can write,

48 = (sum of age of Shikha and Amit)/2

or, sum of age of Shikha and Amit = 48 x 2

or, sum of age of Shikha and Amit = 96

Also,

average age of Shikha, Amit and Advika is 39 years.

So,we can write,

39 = (sum of age of Shikha, Amit and Advika)/3 [because there are 3 people now]

or, sum of age of Shikha, Amit and Advika = 39 x 3

or, sum of age of Shikha, Amit and Advika = 117

So,

Age of Advika = 117 - 96 = 21 years