<PRE><B>Question 1112859</B>
 Solve the following problem
 A.the median for 10,9,y,12 and 6 is y.find posible values of y, given that the values are whole numbers
Put the numbers in order 6, 9, y, 10, 12,
The median cannot be an integer here
:
 B.the mean of 15 number is 30
 and the mean of 10 is 25.
 what is the mean of 25 numbers
m = {{{(15(30)+10(25))/25}}}
m = {{{(450+250)/25}}}
m = {{{700/25}}}
m = 28
:
C.given the set of numbers letter n=(7,9,10,14,8,16,13)
when letter x is added to the set ,the new mean is 12,
calculate the value of x
{{{(7+9+10+14+8+16+13+x)/8}}} = 12
77 + x = 8(12)
x = 96 - 77
x = 19  </PRE>