GRE Exam Numerical Ability Arithmetic

Reservoir A contains 450 million gallons of water more than does Reservoir B. If 100 million gallons of water were to be drained from Reservoir A into Reservoir B, then Reservoir A would contain twice as much water as would Reservoir B. How many million gallons of water does Reservoir A currently contain?

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GRE Other Question

Roger and Robin live 190 miles apart. They both drive in a straight line toward each other to meet for lunch. If Roger drives at 50 mph and Robin drives at 70 mph, then how many miles apart will they be exactly 45 minutes before they meet? In a city, the total rainfall in a certain year was 39 inches. From May to November of that year, the average rainfall was approximately 4.1 inches per month. What was the average rainfall, in inches, for the remaining months of the year? A) 1.84 B) 1.98 C) 2.06 D) 2.21