Question

average of five numbers is 24 number are 4,5 12 15 find 15th numbers​

Answer 1

Correct Question:

• Average of five numbers is 24. Numbers are 4, 5, 12, 15. Find the 5th number.

We know that:

• Average = Sum of values / Number of values

Let us assume:

• The 5th number be x.

We have:

• Average = 24
• Sum of values = 4 + 5 + 12 + 15 + x = 36 + x
• Number of values = 5

Finding the 5th number:

According to the question.

⟶ 24 = (36 + x)/5

Cross multiplication.

⟶ 24 × 5 = 36 + x

⟶ 120 = 36 + x

⟶ 120 - 36 = x

⟶ 84 = x

⟶ x = 84

Hence,

• The 5th number is 84.

Answer 2

5th number = 84

Step-by-step explanation:

Given -

Average of five numbers is 24. Numbers are 4, 5, 12, 15 find the 5th number

Solution -

Let the 5th number as x

Average = sum of values / number of values

=> 24 = (4+5+12+15+x)/5

=> 24 = (36+x)/5

=> 24×5 = 36+x

=> 120 = 36+x

=> 120-36 = x

=> 84 = x

=> x = 84

Hence the 5th number = 84

hope it helps.