Question

in an ap a1+a2+a3+a4+a5=55 and a4=5(a1+a2). Find the AP

Answer 1

Answer:

Step-by-step explanation:

a4=5a1+5a2

6(a1+a2) + a5 =55

Let difference be d

6(a1+a1+d) + a1+4d =55

12a1 + 6d + a1 + 4d =55

13a1+10d=55