Question

The mean of 5 numbers is 37. Four of the numbers are 36, 45, 70 and 14. Find the
fifth number​

Answer 1

let the fifth no. be x

then,

$mean \: = \frac{36 + 45 + 70 + 14 + x}{5} = 37$

$= > \: 36 + 45 + 70 + 14 + x = 185$

$= > \: x = 185 - 165$

x= 20

=> fifth number is 20

Answer 2

Answer:

20

Step-by-step explanation:

$\bigstar \: here \: given \: mean \: of \: 5 \: number \: is \: 37 \\ \\ = > \frac{x1 + x2 + x3 + x4 + x5}{5} = 37 \\ \\ = > \frac{36 + 45 + 70 + 14 + x5}{5} = 37 \\ \\ = > \frac{165 + x5}{5} = 37 \\ \\ = > 165 + x5 = 37 \times 5 \\ \\ = > 165 + x5 = 185 \\ \\ = > x5 = 185 - 165 \\ \\ = > x5 = 20 \\ \\ \huge \: fifth \: number \: is \: 20$