A. 36km/h

B. 45km/h

**C. 48km/h**

D. 50km/h

Explanation:

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Speed of person from x to y =40 km/h

Speed of person from y to x =(40×150)/100 = 60km/h

Since the distance travelled is same

Therefore, Average Speed = (2x40x60)/40+60 = **48km/h**

### Related Mcqs:

- A man rides his bicycle 10 km at an average speed of 12 km/hr and again travels 12 km at an average speed of 10 km/hr. What is his average speed for the entire trip approximately?
A. 11.2 kmph

B. 10 kmph

C. 10.2 kmph

**D. 10.8 kmph** - A man travels a distance of 2 km by walking at a speed of 6 km/hr. He returns back at a speed of 4 km/hr. What is his average speed?
A. 4.5 kmph

**B. 4.8 kmph**

C. 5 kmph

D. 5.1 kmph - A man travels from A to B at a speed of 30 kmph and returns with a speed of 60 kmph. What is the average speed of the man?
A. 47.5

B. 50

C. 45

**D. 40** - A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, there by increasing his average by 6 runs. His new average is_____________?
**A. 48 runs**

B. 52 runs

C. 55 runs

D. 60 runs - Barkat is travelling on his cycle and has calculated to reach point A at 2 P.M. if he travels at 10 kmph; he will reach there at 12 noon if he travels at 15 kmph. At what speed must he travel to reach A at 1 P.M. ?
A. 8 kmph

B. 11 kmph

**C. 12 kmph**

D. 14 kmph - A boy goes to his school from his house at a speed of 3 km / hr and returns at a speed of 2 km / hr. If he takes 5 hours in going and coming, the distance between his house and school is :___________?
A. 5 km

B. 5.5 km

**C. 6 km**

D. 6.5 km - A man goes to his office from his house at a speed of 3 km/hr and returns at a speed of 2 km/hr. If he takes 5 hours in going and coming, what is the distance between his house and office?
A. 3 km

B. 4 km

C. 5 km

**D. 6 km** - A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings?
A. 34

B. 35

C. 36

**D. 37** - A car gives a mileage of 20 km per liter of petrol when driven at a constant speed of 50 kmph but the mileage decreases by 10% when driven at a speed of 70 kmph. How many km can the car travel with 12 liters of petrol if it travels a speed of 70 kmph?
**A. 216 km**

B. 240 km

C. 228 km

D. 200 km - At 10 a.m. two trains started traveling toward each other from stations 287 miles apart. They passed each other at 1:30 p.m. the same day. If the 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

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