Question

If the arithmetic mean between two number is 50 and the second number is 60 .find first number​

Answer 1

Answer:

40

Step-by-step explanation:

Let A & B be two numbers. Then, Arithmetic mean of A & B is :

(A+B)/2 =50

A+B = 50*2 = 100

Let B = 60, Then A+60=100 gives A =100 - 60 =40

Therefore, first number is 40.