Question

If A.M of a, a+3, a+6, a+9, a+12 is 10, then find the value of a.​

Answer 1

Answer:

X+(X+3)+(X+6)+(X+9)+(X+12)=10

5X+30=10

5X=10–30

5X=-20

X=-4

Answer 2

Answer:

Explanation: Mean of AM = 10

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

5a+ 30 = 50

5a=20

a=4