Question

The average of three numbers is 16 teo of the number are 20 and24 find a third number find the third number

Answer 1

Appropriate Question :

• The average of three numbers is 16. If two numbers are 20 and 24 . find the third number

Answer :

• Third number is 38.7

Given :

• The average of three numbers is 16
• If two numbers are 20 and 24

To find :

• Third number

Solution :

• Let the third number be x

Given , Average of three numbers is 16

We know that

• Average = Sum of observations/no.of observations

Where,

• Average = 16
• Sum of observations = 20 + 24 + x
• No.of observations = 3

According to question :

➙ Average = Sum of observations/No.of observations

➙ 16 = 20 + 24 + x / 3

➙ 16/3 = 20 + 24 + x

➙ 5.3 = 44 + x

➙ x = 44 - 5.3

➙ x = 38.7

Hence, Third number is 38.7