Question

Average of 10 numbers is 12. if 3 is added to each number then find the new average​

Answer 1

Answer:

Step-by-step explanation:

sum of 10 no.s = 10×12= 120

if 3 is added to each, new sum= 120+ 10×3= 150

new mean= 150÷10=15

Hope you will find this helpful :)

Answer 2

Answer:

15

Step-by-step explanation:

Average of 10 numbers= 12

Average= Sum of all observations/ No. of observations

12= Sum of all observations/ 10

120= Sum of all observations

If 3 is added to each no. the sum will be= 120 + 10×3= 120+30= 150

New Average= Sum of all observations/ No. of observations

New Average= 150/ 10

New Average= 15

Hope It Helps :)