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gmat set 4 PS

by clammiestqasar » Mon Aug 23, 2010 6:23 pm
At a certain company, each employee has a salary grade s that is at least 1 and at most 5. Each employee receives an hourly wage p, in dollars, determined by the formula p = 9.50 + 0.25(s - 1). An employee with a salary grade of 5 receives how many more dollars per hour than an employee with a salary grade of 1?

A. $0.50
B. $1.00
C. $1.25
D. $1.50
E. $1.75

OA C
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by Rahul@gurome » Mon Aug 23, 2010 7:22 pm
Solution:
The hourly wage of an employee with salary grade 5 is 9.5 + 0.25*(5-1) = 9.5 + 1 = $10.5
The hourly wage of an employee with salary grade 1 is 9.5 + 0.25*(0) = $9.5.
The difference is 10.5 - 9.5. = $1.

The correct answer is (B).
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