Question

if AM of a,a+3,a+6,a+9&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

a = 4