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Two dogsled teams raced across a 300 mile course in Wyoming . Team A finished the course in 3 ours than did team B. If team As average sped was 5 miles per hour greater than that of team B , what was team B's average speed in miles per hour?
A
12
B
20
C
18
D
25
Correct Answer:
20
Two dogsled teams raced across a 300 mile course in Wyoming. Team A finished the course in 3 fewer hours than did team B. If team A's average speed was 5 miles per hour greater than that of team B, what was team B's average speed, in miles per hour?
A
12
B
20
C
18
D
25
when a truck travels at 60 miles per hour, it uses 30 percent more gasoline to travel andy distance than it does when it travels at 50 miles per hour. The truck can travel 20 miles on a gallon of gas if it is travelling at 50 miles per hour. The truck has only 10 gallons of gas and is 160 miles from its destination. It takes 20 minutes for the truck to stop for gas . How long will it take the truck to reach its final destination if it is driven at 60 miles per hour?
A
160 minutes
B
180 minutes
C
190 minutes
D
192 minutes
A car goes 15 miles on a gallon of octane when it is driven at 50 miles per hour. When the car is driven at 60 miles per hour, it only goes 80% as far. How many gallons of octane is needed to travel 200 miles if half the distance is traveled at 50 miles per hour and the rest at 60 miles per hour?
A
13.33
B
16.67
C
10.6
D
15
A man travels 100 miles at 20 miles per hour, 60 miles at 30 miles per hour and 80 miles at 10 miles per hour, what is his average rate for the three trips?
A
18 miles per hr
B
17 miles per hr
C
20 miles per hr
D
16 miles per hr
On a trip of 200 miles, a man travels at the rate of 40 miles per hour for the first 100 miles. For the rest of the trip, he travels at the rate of 55 miles per hour . What is his average speed, in miles per hour, for the total trip ?
A
400/9
B
200/9
C
90
D
50
John, Jack, Joseph and Jordan participated in a running race. Only the winner finished the race in 10 minutes. Which two pieces of information can tell you who the winner was? (i) John finished the race in 16 minutes . (ii) Joseph finished the race earlier than Jack by 2 minutes. (iii) Jack finished the race later than Jordan by 4 minutes. (iv) Jordan finished the race earlier than John by 6 minutes. (v) John finished the race later than Joseph by minutes.
A
I and II
B
I and IV
C
II and III
D
II and V
A man travels a distance of 10 miles at 20 miles per hour and returns over the same route at 30 miles per hour. What is his average speed for the round trip in miles per hour?
A
35
B
30
C
25
D
24
A train travels at an average speed of 50 miles per hour for 2.5 hour, and then travels at an average speed of 70 miles per hour for 1.5 hours. How far did the train travel in the entire 4 hour?
A
200 miles
B
230 miles
C
150 miles
D
300 miles
At 10 a.m. two trains started travelling toward each other from stations 287 miles apart. They passed each other at 1:30 pm the same day. They average speed of the faster train exceeded the average speed of the slower train by 6 miles per hour. which of the following represents the speed of the faster train, in miles per hour?
A
38
B
40
C
44
D
48
Read the passage carefully and choose the best answer to each question out of the four alternatives.
In mid-2012 I completed my first massive online open course, or MOOC, the kind widely offered by Coursera, EdX, Udacity and so on in partnership with different educational institutions. It was on clinical trials and ethical practices, offered by Johns Hopkins, on Coursera. This was shortly before the MOOC sensation hit India, and when Coursera, which was founded by two Stanford professors, itself was just a few months old. The MOOC bug had bit me. The course Id completed was mainly designed for health care professionals who would be involved in actual clinical trials, not college students who had no prior knowledge of that area. I decided to enroll in the course because it was the only biology related course open at the time. However, I did see hope in that sometime in the future Id be able to get a glimpse of what classes are like in the hallowed halls of major educational institutions around the world. By early 2013, Coursera and EdX had partnered with so many educational institutions and expanded their course offerings to include everything from food and nutrition to Greek mythology to business, that I was spoilt for choice. I spent hours going through course catalogues and poring over course descriptions, almost delirious with excitement at the fact that I was actually going to be able to take classes offered by universities I had only dreamt of attending.
The course the author completed on MOOC was related to which subject?
A
Biology
B
Nutrition
C
Mythology
D
Business