Sam and Tom decide to travel to their home town in their cars. Sam covers 200 km in 6 hours on the first day of journey while Tom covers 350 km in 5 hours. Similarly, on the second, third and fourth day Sam took 20 hours and his average speed was 38 kmph whereas Tom took 15 hours. What will be the difference between their average speed if Tom and Sam cover the same distance in four days?

14 kmph
11 kmph
8 kmph
20 kmph
18 kmph

LohaHridoy

12 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 2 : 11 kmph

Given:

Total distance covered by Sam in four days = 200 + 20 × 38 = 960 km

Formula:

Average speed = total distance / total time

Calculation:

Total distance covered by Tom in four days = 960 km

Average speed of Sam = 960 / (20 + 6) = 36.92 kmph

Average speed of Tom = 960 / (5 + 15) = 48 kmph

Required difference = 48 – 36.92 = 11.08 kmph

12 views Answered 2022-09-04 04:29

Related Questions

The question below is followed by three statements I, II, and III. You have to determine whether the data given is sufficient for answering the question. You should use the data and your knowledge of mathematics to choose the best possible answer. A car travels from city P to city Q in T hours with a speed of v km per hour. Distance between cities P and Q is D kilometers. If it increases its speed by 5 kmph it saves some time. Find the actual speed of the car. Statement I: If the car travels from P to Q with its actual speed of v kmph and come back with the speed of v + 5 kmph in 2T – 0.6 hrs Statement II: A bus start form Q at the same time when the car starts from P and the speed of the bus is 50% more than the speed of the car and the bus meets car after covering 60% of the distance Statement III: Distance between PQ is given by D2 – 25D + 200 = 0 ?

1 Answers 9 Views

Ajay covers certain distance with his own speed but when he reduces his speed by 10 km/h, his time duration for the journey increases by 40 hours while if, he increases speed by 5 km/h from his original speed, he takes 10 hours less than the original time taken. Find the distance covered by him.?

1 Answers 4 Views

A boy goes to school from home at 6 km/hr and moves back from school at 4 km/hr. If he walks from market to home at the average speed of the previous journey and his father starts walking from his home at the speed of 8 km/hr. When he meets with his father then his father covers 2 km more distance than him. After how many minutes they will meet?

1 Answers 4 Views

A started his journey at the speed of 36 kmph towards his house from the city but he reaches 10min late and when he started his journey at the speed of 45 kmph then he will reach there 15 min early. What should be his speed if he has to reach his house in 15 hours?

1 Answers 5 Views

A train running at an average speed of 40 km/hr covers 200 km until it reaches its first stoppage where it stops for a certain time. After a stoppage, the train covers the remaining distance at an average speed of 60 km/hr unit it completes the journey in a total of 10 hours 36 minutes. had the remaining distance been covered at a speed that increases by 10 km/hr every hour starting with 20 km/hr then the remaining distance would have been covered in 51/8 hours, Find the stoppage time ?

1 Answers 9 Views

Paulson belongs to Town A and Robson belongs to Town B. They start their journey towards each other’s towns following the same route at the same time. They meet somewhere on the way and continue with their journey. After meeting Robson, Paulson takes another 2 hours to reach the destination while Robson takes another 4.5 hours to reach Paulson’s town. If Robson travelled at the speed of 30 Km/h, find Paulson’s speed in km/h.?

1 Answers 4 Views

Parvez belongs to Town A and Gautam belongs to Town B. They start their journey towards each other’s towns following the same route at the same time. They meet somewhere on the way and continue with their journey. After meeting Gautam, Parvez takes another 16 hours to reach his destination while Gautam takes another 4 hours to reach Parvez’s town. If Parvez travelled at the speed of 40km/h, find Gautam’s speed in km/h.?

1 Answers 12 Views

Suresh plans a trip from city A to city B which are ‘x’ km apart and returning to city A. There are two light traffic zones of 25 km length each where he goes at a speed of 20 km/hr and returns at a speed of 25 km/hr. There are two heavy traffic zones of 35 km length each where he goes with a speed of 14 km/hr and returns at a speed of 21 km/ hr. For other part of the journey he maintains his speed at 90 km/hr while going and 60 km/hr while returning. If it took 2 hrs extra to go to city B from city A than to return from city B to city A, what is the approximate average speed with he was moving during his return journey (in km/hr)?

1 Answers 4 Views

Peter belongs to Town A and Paul belongs to Town B. They start their journeys towards each other’s towns following the same route at the same time. They meet somewhere on the way and continue with their journeys. After meeting Paul, Peter takes another 13.5 hours to reach his destination while Paul takes another 6 hours to reach Peter’s town. If Peter travelled at the speed of 30 km/h, what was Paul’s speed in km/h?

1 Answers 4 Views

A person travels one-third of his journey at a speed of 40 km/h, the next one-third at a speed of 30 km/h, and the remaining part at a speed of 15 km/h. If his average speed in the entire journey was x km/h, then how much time (in hours) would he take to cover a distance of 144 km at an average speed of x km/h?

1 Answers 4 Views

এক্সাম দিয়ে মেধা যাচাই করুন

Job Preparation (1125)

Admission (754)

এসএসসি (10)

এইচএসসি (5)