Question

the average of 4 sisters is 7 years if the age of the mother is included the average is increased by six years find the age of mother. ​

Answer 1

Step-by-step explanation:

42 is the age of mother

have a good day

Answer 2

Answer:

37 years

Step-by-step explanation:

Given that the average age of four sisters is 7 years and if the age of the mother is included the average is increased by six years.

We need to find out the age of mother.

Let's say the age of mother be x years.

Now,

The total age of four sisters is = 4 × 7

= 28 years

Now mother's age is also included and due to this the average is increased by 6 years.

New average age = 7 + 6

= 13 years (for 5 person)

So, total age of 5 person (4 sisters and mother) = 5 × 13

= 65 years

The age of mother = Total age of 5 person - Total age of 4 sisters

= 65 - 28

= 37

Therefore, the age of mother is 37 years.