Machine A produces 100 parts twice as fast as Machine B does. Machine B produces 100 parts in 40 minutes...

This topic has expert replies
Moderator
Posts: 2505
Joined: Sun Oct 15, 2017 1:50 pm
Followed by:6 members

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Source: GMAT Paper Tests

Machine A produces 100 parts twice as fast as Machine B does. Machine B produces 100 parts in 40 minutes. If each machine produces parts at a constant rate, how many parts does Machine A produce in 6 minutes?

A. 30
B. 25
C. 20
D. 15
E. 7.5

The OA is A
Source: — Problem Solving |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3008
Joined: Mon Aug 22, 2016 6:19 am
Location: Grand Central / New York
Thanked: 470 times
Followed by:34 members
BTGmoderatorLU wrote:
Sun Mar 01, 2020 5:48 am
Source: GMAT Paper Tests

Machine A produces 100 parts twice as fast as Machine B does. Machine B produces 100 parts in 40 minutes. If each machine produces parts at a constant rate, how many parts does Machine A produce in 6 minutes?

A. 30
B. 25
C. 20
D. 15
E. 7.5

The OA is A
Given that Machine B produces 100 parts in 40 minutes, we have Machine A produces 100 parts in 40/2 = 20 minutes.

Thus, Machine A produces in 6 minutes = (100/20)*6 = 30 parts

The correct answer: A

Hope this helps!

-Jay
_________________
Manhattan Review

Locations: Manhattan Review Bangalore | GMAT Prep Chennai | GRE Prep Himayatnagar | Hyderabad GRE Coaching | and many more...

Schedule your free consultation with an experienced GMAT Prep Advisor! Click here.

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 8085
Joined: Sat Apr 25, 2015 10:56 am
Location: Los Angeles, CA
Thanked: 43 times
Followed by:29 members
BTGmoderatorLU wrote:
Sun Mar 01, 2020 5:48 am
Source: GMAT Paper Tests

Machine A produces 100 parts twice as fast as Machine B does. Machine B produces 100 parts in 40 minutes. If each machine produces parts at a constant rate, how many parts does Machine A produce in 6 minutes?

A. 30
B. 25
C. 20
D. 15
E. 7.5

The OA is A
We can see that the rate of Machine B = 100/40 = 5/2 parts per minute. Since Machine A is twice as fast as Machine B, the rate of Machine A = 5/2 x 2 = 5 parts per minute.

Thus, in 6 minutes, Machine A can produce 5 x 6 = 30 parts.

Answer: A

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