Question

The mean of 5 numbers is 8. The numbers are in the ratio 1 : 1 : 2 : 3 : 3. Find the biggest number.

Answer 1

Answer:

If 8 is the mean of 5 numbers, which are in the ratio 1:1:2:3:3, then the biggest number is 12

Step-by-step explanation:

Given

Mean of the 5 numbers = 8

Ratio of the numbers = 1 :1 :2 :3 :3

That is if one number is 1x, then the other numbers are 1x, 2x , 3x, and 3x

Mean = sum of total numbers / 5

That is,

$8 =\frac{1x +1x +2x + 3x +3x}{5}\\\\8*5 = 10 x\\\\10 x = 40\\\\ x = \frac{40}{10} \\\\= 4$

x is 4

Here, the biggest number is 3x

So, 3x = 3*4= 12

So, the biggest number is 12