Ann and Bob drive separately to a meeting. Ann's average driving speed is greater than Bob's avergae driving speed by one-third of Bob's average driving speed, and Ann drives twice as many miles as Bob. What is the ratio Q of the number of hours Ann spends driving to the meeting to the number of hours Bob spends driving to the meeting?
Answers:
A) 8:3	B) 3:2	C) 4:3	D) 2:3	E) 3:8
Say the rate of Bob is 3mph and he covers 6 miles then he needs 6/3= 
<gadget id="calculator">6/3</gadget>
<output>2</output>
2 hours to do that.   Now, in this case the rate of Ann would be 3+3*1/3= 
<gadget id="calculator">3+3*1/3</gadget>
<output>4</output>
4mph and the distance she covers would be   6*2= 
<gadget id="calculator">  6*2</gadget>
<output>12</output>
12 miles, so she needs   12/4= 
<gadget id="calculator">  12/4</gadget>
<output>3</output>
3 hours for that.   The ratio Q of Ann's time to Bob's time is 3:2.   Answer: 3:2.
<result>B</result>
Ann and Bob drive separately to a meeting. Ann's average driving speed is greater than Bob's avergae driving speed by one-third of Bob's average driving speed, and Ann drives twice as many miles as Bob. What is the ratio Q of the number of hours Ann spends driving to the meeting to the number of hours Bob spends driving to the meeting?