BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

How many minutes does it take John

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 410
Joined: Fri Mar 13, 2015 3:36 am
Location: Worldwide
Thanked: 120 times
Followed by:8 members
GMAT Score:770

by OptimusPrep » Tue May 03, 2016 7:31 pm
boomgoesthegmat wrote:How many minutes does it take John to type y words if he types at the rate of x words per minute?

A) x/y
B) y/x
C) xy
D) 60x/y
E) y/60x

OA: B
Hi boomgoesthegmat,

Can you please let us know in which step are you facing a difficulty in this question?
As for the solution,

Minutes required to type x words = 1
Minutes required to type 1 word = 1/x

Minutes required to type y words = (1/x)*y = y/x

Correct Option: B
Top

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 8083
Joined: Sat Apr 25, 2015 10:56 am
Location: Los Angeles, CA
Thanked: 43 times
Followed by:29 members

by Scott@TargetTestPrep » Wed Apr 04, 2018 5:00 pm
boomgoesthegmat wrote:How many minutes does it take John to type y words if he types at the rate of x words per minute?

A) x/y

B) y/x

C) xy

D) 60x/y

E) y/60x
We are given that John types at a rate of x words per minute; thus, his rate is:

x/1 = x

We are asked for the number of minutes it will take John to type y words. We can solve, using the formula for time.

time = work/rate

time = y/x

Alternate Solution:

We are given that John types at a rate of x words per minute; thus, his rate is (x words)/(1 minute).

Let's let q = the number of minutes it will take him to type y words. We can set up a proportion:

x/1 = y/q

Cross multiplying, we have:

xq = y

Solving for q, we have:

q = y/x

Answer: B

Scott Woodbury-Stewart
Founder and CEO
[email protected]

Image

See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews

ImageImage
Top
Post new topic Post Reply
• Page 1 of 1