Last Updated on May 4, 2023
GMAT OFFICIAL GUIDE PS
Solution:
Let’s first determine the sum of 7/8 and 1/9.
7/8 + 1/9
Getting a common denominator of 72 gives us:
63/72 + 8/72 =71/72
Notice that 71/72 is just a bit less than 1. This will be useful when analyzing our answer choices.
A) ½ and ¾
Since 3/4 = 54/72, we can see that 71/72 is greater than ¾. Answer choice A is not correct.
B) 3/4 and 1
We see that 71/72 is greater than ¾ and less than 1. Answer choice B is correct. To be certain, let’s check the other answer choices.
C) 1 and 1 1/4
Since 71/72 is less than 1, answer choice C is not correct.
D) 1 1/4 and 1 1/2
Since 71/72 is less than 1, answer choice D is not correct.
E) 1 1/2 and 2
Since 71/72 is less than 1, answer choice E is not correct.
Answer: B