Question

The average age of three friends is 20 years. If the ages of two
friends are 20 years and 22 years. Find the age of the third friend.

Answer 1

is a process of evaluating the likely environmental impacts of a proposed project or development, taking into account inter-related socio-economic, cultural and human-health impacts, both beneficial and adverse.The atmosphere of Earth is the layer of gases, commonly known as air, retained by Earth's gravity, surrounding the planet Earth and forming its planetary atmosphere

Answer 2

Answer:

Given

average of A, B , C ages is 20 years

average of A & B ages is 19 years

To Find

The age of C

Solution

Sum of The ages of A , B , C = 20 × 3

= 60

Sum of ages of A & B = 19 × 2

= 38

A + B + C = 60  

38 + C = 60

C = 60 - 38

C = 22

so the age of C is 22 years

Step-by-step explanation: