Question

If Mean of a, a+3, a+6, a+9 and a+12 is 10, then a is equal to;

Answer 1

Answer:

a=4

Step-by-step explanation:

a+a+3+a+6+a+9+a+12/5=10

5a+30/5=10

5a+30=50

5a=50-30

5a=20

a=20/5=4

a=4

hope it'll help

Answer 2

Answer:

I hope for a+3

a = 7

For a+6

a = 4

For a+9

a = 1

For a+12

a = -2