Question 991646
 the mean of ten positive numbers is 16 when another number is added it changes to 18
 find the number with solutions 
let n = another number
{{{(n + 10(16))/11}}} = 18
multiply both side by 11, distribute the 10
n + 160 = 11 * 18
n = 198 - 160
n = 38 is the number