Question

if the average of two numbers is 78 .If the one number is 54 , find another one.​

Answer 1

Answer:

102

Step-by-step explanation:

Let the number be x

(54+x)/2=78

54+x=78X2

54+x=156

x=156-54

x=102

Answer 2

Answer:

102

Step-by-step explanation:

average = sum of number

number of digits

= 54 + x = 78

2

x = ( 78 × 2 ) - 54

x = 156 - 54

x = 102