Latest CAT Aptitude Question SOLUTION: Sum of first 25 terms of an AP is 525; sum of the next 25 terms is 725; what is the common difference?

• Placement Papers
• /
• CAT

CAT Question Papers:

(#M40025657) CAT question Progressions Keep an EYE

Sum of first 25 terms of an AP is 525; sum of the next 25 terms is 725; what is the common difference?

Asked In CAT MAN (10 years ago)

Unsolved Read Solution (2)

Is this Puzzle helpful?   (10)   (1) Submit Your Solution

Read Solution (2) :

raghuram dharmavarpu  (10 years ago)

sum of first 25 terms of an A.P is 525
we know that s(25)=n/2(2a+(n-1)d)=25/2(2a+24d)=525-(1)
sum of next 25 terms of an A.P is 725,so that total number of terms is 50
so that it can be written as 50/2(2a+49d)=(725+525)-(2)
1 can be written as 2a+24d=42-(3)
2 can be written as 2a+49d=5o-(4)
so that 3&4 is solved,we get 25d=8=>d=8/25
common difference is 8/25.

Is this solution Helpfull? Yes (7) | No   

RAVI GANGWAR  (10 years ago)

ans =-17/25

Is this solution Helpfull? Yes | No (4)  

Please Login to Read Solution.