If a certain dog ate 1/5 of his food on a certain day, what was the ratio of the portion of food eaten to the portion uneaten?
A. 5:1
B. 4:1
C. 2:3
D. 1:5
E. 1:4
The OA is E.
If a dog ate 1/5 of his food on a certain day, then 4/5 was uneaten.
Thus the ratio of eaten to uneaten food is:
(1/5)/(4/5) = 5/20 = 1/4.
Option E.
Has anyone a different suggestion to solve this PS question?
5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILS
If a certain dog ate 1/5 of his food on a certain day
This topic has expert replies
GMAT/MBA Expert
-
Brent@GMATPrepNow
- GMAT Instructor
- Posts: 16207
- Joined: Mon Dec 08, 2008 6:26 pm
- Location: Vancouver, BC
- Thanked: 5254 times
- Followed by:1268 members
- GMAT Score:770
Your approach is great.swerve wrote:If a certain dog ate 1/5 of his food on a certain day, what was the ratio of the portion of food eaten to the portion uneaten?
A. 5:1
B. 4:1
C. 2:3
D. 1:5
E. 1:4
The OA is E.
If a dog ate 1/5 of his food on a certain day, then 4/5 was uneaten.
Thus the ratio of eaten to uneaten food is:
(1/5)/(4/5) = 5/20 = 1/4.
Option E.
Has anyone a different suggestion to solve this PS question?
Another approach would be to choose some numbers that satisfy the given conditions.
. . . a certain dog ate 1/5 of his food on a certain day
So, let's say the dog had 5 pounds of food available.
If the dog ate 1/5 of its food, then it ate 1/5 of 5 pounds.
So, the dog ATE 1 pound of food.
We can also conclude that the UNEATEN portion = 5 pounds - 1 pound = 4 pounds
. . . what was the ratio of the portion of food eaten to the portion uneaten?
ratio = 1/4
Answer: E
Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
GMAT/MBA Expert
-
Jeff@TargetTestPrep
- GMAT Instructor
- Posts: 1462
- Joined: Thu Apr 09, 2015 9:34 am
- Location: New York, NY
- Thanked: 39 times
- Followed by:22 members
Since the eaten portion is 1/5, the uneaten portion is 4/5. Therefore, the ratio of the eaten portion to the uneaten portion is (1/5)/(4/5) = 1/4, or 1:4.swerve wrote:If a certain dog ate 1/5 of his food on a certain day, what was the ratio of the portion of food eaten to the portion uneaten?
A. 5:1
B. 4:1
C. 2:3
D. 1:5
E. 1:4
Answer: E
Jeffrey Miller
Head of GMAT Instruction
[email protected]
See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews
