GMAT Math Practice Test #1

Answer: C

Assume base year sales as 100. The current year target =100 + 50% = 150.
Actual sales = 100 - 25% = 75. Thus current year sales are 75 against target of 150.
In percentage = (75/150) % = (75/150) x 100 = 50%

Key takeaway: In percent or profit-loss word problems, it is easier to understand if start with assumed base of 100.