If z=1+1/x where x>1, then z could equal to which of the following?

a. 1/5

b. 5/8

c. 9/7

d. 15.11

e. 8/7

## MATH

##### This topic has expert replies

### GMAT/MBA Expert

- [email protected]
- Elite Legendary Member
**Posts:**10347**Joined:**23 Jun 2013**Location:**Palo Alto, CA**Thanked**: 2867 times**Followed by:**507 members**GMAT Score:**800

From your post, I'm going to assume that the equation that you included is meant to be:

Z = 1 + (1/X) and X > 1

As X increases, the value of (1/X) decreases - so we'll be adding a potentially small fraction to 1. We can actually TEST THE ANSWERS here - and use the answer choices to our advantage (by considering the DENOMINATORS of each of the 5 answers). If X = 7, then we'd end up with Z = 1 + (1/7) = 8/7

Final Answer: E

GMAT assassins aren't born, they're made,

Rich