Question

The sum of 4 consecutive numbers in an AP is 32 and the ratio of the product of the first and the last term to the product of the middle terms is 7:15. find the numbers.

How you take the nos. as a+d,a-d......Explain ,
expecting the ans. in written form rather than typed.....

Answer 1

plz find the answer in my attachment
first of all let me tell the author that we took a - 3d , a - d , a + d and a + 3d because as you can see they are in AP with common difference 2d
hope this helps

Answer 2

we have to take it because the general form of AP is....