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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.
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Source: — Data Sufficiency |
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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]
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