A = summ of
x +x+1 +x+2 +x+3 +x+4
next 5 consequtive integers are
x+5 + x+1+5 + x+2+5 ...... ad 5 to each
and you'll get the difference 25
A+25
C
OA?
5 consecutive positive integers
This topic has expert replies
Source: Beat The GMAT — Problem Solving |
-
Mani_mba
- Master | Next Rank: 500 Posts
- Posts: 267
- Joined: Wed Jul 16, 2008 12:20 am
- Thanked: 4 times
- Followed by:1 members
IMO C
The last integer of the first set of 5 consecutive integers: (A/5)+2
(A/5 is the average of the first set and also the third integer of the first set. Hence A/5 + 2 is the fifth integer of the first set)
the nos in the second set are
A/5+3, A/5+4, ......, A/5+7
Hence the sum is A + 25.
What is the OA ?
The last integer of the first set of 5 consecutive integers: (A/5)+2
(A/5 is the average of the first set and also the third integer of the first set. Hence A/5 + 2 is the fifth integer of the first set)
the nos in the second set are
A/5+3, A/5+4, ......, A/5+7
Hence the sum is A + 25.
What is the OA ?
