A store sells two types of birdfeeder: Alphas and Bravos.

[swerve]

A store sells two types of birdfeeder: Alphas and Bravos. Alphas feed one bird at a time, whereas Bravos feed two birds at a time. The total number of birds that can be fed at one time by birdfeeders sold last month is 50. What is the total revenue generated by birdfeeders sold last month?

1. Last month, the price of each Alpha was $15, and the price of each Bravo was $30.
2. 40 Alphas were sold last month.

The OA is A.

Source: Manhattan Prep

[Jay@ManhattanReview]

A store sells two types of birdfeeder: Alphas and Bravos. Alphas feed one bird at a time, whereas Bravos feed two birds at a time. The total number of birds that can be fed at one time by birdfeeders sold last month is 50. What is the total revenue generated by birdfeeders sold last month?

1. Last month, the price of each Alpha was $15, and the price of each Bravo was $30.
2. 40 Alphas were sold last month.

The OA is A.

Source: Manhattan Prep

Say the birdfeeder sold x Alphas and y Bravos, thus, x + 2y = 50.

We have to find out the total revenue generated by birdfeeders sold last month, i.e by Alpha and Bravo together.

Let's take each statement one by one.

1. Last month, the price of each Alpha was $15, and the price of each Bravo was $30.

Total revenue = 15x + 30y = 15(x + 2y) = 15*50 = $750. Sufficient.

2. 40 Alphas were sold last month.

Certainly insufficient.

The correct answer: A

Hope this helps!

-Jay
_________________
Manhattan Review GMAT Prep

Locations: Beijing | Copenhagen | Oslo | Lisbon | and many more...

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