gmat pr-1

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by bluementor » Thu Apr 23, 2009 3:38 am
No. of employees before 1st July = X
No. of employees after 1st July = Y
Change in no. of employees = reduced by 10%

So, Y = 0.9X

Avg. salaray before 1st July = P
Avg. salaray after 1st July = Q
Change in avg. salary = increased by 10%

So, Q = 1.1P

Total salary = Average salary x No. of employees

Total salary before 1st July = PX
Total salary after 1st July = QY

So,

QY/PX = (0.9X)(1.1P)/PX = (9/10)(11/10) = 99/100 = 99%

Choose B.

-BM-