Word Problems

This topic has expert replies
User avatar
Senior | Next Rank: 100 Posts
Posts: 38
Joined: Tue Feb 10, 2009 6:24 am
Location: Hong Kong
Followed by:2 members

Word Problems

by singhmaharaj » Tue May 06, 2014 3:02 am
To install cable television in a home, a certain cable company charges a basic fee of $30 plus a fee of $20 for each cable outlet installed in the home. How much did the cable company charge the Horace family for installing cable television in their home?

1) The cable company installed thre outlets in the Horace family home.

2) The amount that the cable company charged the Horace family for installing cable television in their home was equivalent to an average (arithematic mean) charge of $30 per cable outlet installed.
Source: — Data Sufficiency |

User avatar
GMAT Instructor
Posts: 3650
Joined: Wed Jan 21, 2009 4:27 am
Location: India
Thanked: 267 times
Followed by:80 members
GMAT Score:760

by sanju09 » Tue May 06, 2014 5:05 am
singhmaharaj wrote:To install cable television in a home, a certain cable company charges a basic fee of $30 plus a fee of $20 for each cable outlet installed in the home. How much did the cable company charge the Horace family for installing cable television in their home?

1) The cable company installed thre outlets in the Horace family home.

2) The amount that the cable company charged the Horace family for installing cable television in their home was equivalent to an average (arithmetic mean) charge of $30 per cable outlet installed.
We plainly need the number of cable outlets installed in the Horace family.

(1) If it reads as it should be "The cable company installed three outlets in the Horace family home.", then it's sufficient.

(2) Hence, if there were n cable outlet installed in the Horace family, then according to the stem and the fact 2 in hand, we have 30 + 20 n = 30n, [spoiler]and it's sufficient!

Pick D
[/spoiler]
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com