Question

Sum of 1st 10 terms of ap is 175 and the sum of next 10 terms of ap is 475 find the ap

Answer 1

Answer:

Step-by-step explanation:

a + 9d = 175

a + 19d= 475

solving 2 equations

10d      = 300

d          = 30

subs d = 30 in 1 st equation

a + 270= 175

a           = -95

so the ap is -95, -65, -35 ,...