Question

Average of 4 numbers is 20. If each number is multiplied by 3, what will be the new average?

Answer 1

Answer:

60

Step-by-step explanation:

let 4 no. be a, b, c, d;

according to question:

(a+b+c+d) /4=20;

(a+b+c+d) =80;

3(a+b+c+d)=240;

we know that:

avg= Sum of observation/No. of observation

therefore

new average

= 240/4

=60