Question 66
The average of 4 numbers is 9. If another number 14 is included, then what is the new average?
Solution
let w,x,y,z be the 4 numbers
Avg=$$ \frac{w+x+y+z}{4}$$=9
w+x+y+z=36
New no.v=14
Avg of 5 no is = $$\frac{w+x+y+z+v}{5}$$
=$$\frac { 36+14}{5}$$
= 10
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