Related Questions

A person travels a certain distance at 3 km/hr and reaches 15 mi late. If he travels at 4 km/hr reaches 15 min late. If he travels at 4 km/hr reaches 15 min earlier. The distance he has to travel is -
A 8.5 km
B 6 km
C 7.2 km
D 12 km
A person travels a certain distance at 3 km / hr and reaches 15 min late. If he travels at 4 km / hr, he reaches 15 min earlier . The distance he has to travel is __
A 4.5km
B 6 km
C 7.2 km
D 12 km
If Zara walks at 5 km/hr, she reaches the bus stop 5 minutes late and if she walks at 6 km/hr , she reaches the bus stop 5 minutes earlier . The bus stop is at a distance of -
A 3 km
B 5 km
C 6 km
D 10 km
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
Arif starting from x goes to Y. t the same time Boby starts from Y and goes towards X. Once Arif reaches Y, he changes his direction and returns to X. Once Boby reaches X, he changes his direction and returns to Y. Throughout the journey, Arif travels at 54 kmph and Boby travels at 72 kmph. By the time they meet for the second tike, boby covers 36 km more than Arif. Find the distance (in km) between X and Y.
A 72
B 84
C 96
D None
গাড়ি A সোজা রাস্তায় 60 km/hr সমবেগে চলছে । অন্য একটি গাড়ি B একই পথে 70 km/hr সমবেগে A গাড়িটিকে অনুসরণ করছে । যখন গাড়ি দুইটির মধ্যকার দূরত্ব 2.5 km হয় তখন B গাড়িটির গতিবেগ 20 kmhr-2 হারে হ্রাস পেতে থাকে । কত দূরত্ব ও সময় পরে B গাড়িটি A গাড়িটিকে ধরতে পারবে
A 37.5 km and 0.25 hr
B 32.5 km and 0.50 hr
C 30 km and 0.50 hr
D 60 km and 0.25 hr
একটি মোটর গাড়ির হর্ণ দিয়ে 100 Hz কম্পাঙ্কের শব্দ উৎপন্ন করতে করতে একজন স্থির পর্যবেক্ষকের নিকট হতে একটি স্থির দেয়ালের দিকে 36 kmhr-1 বেগে চলছে। পর্যবেক্ষক প্রতি সেকেন্ডে কতগুলো স্বরকম্প গুনতে পাবে? [ বাতাসে শব্দের বেগ =332 ms-1 ]
A 3
B 7
C 6
D 8
Rehana leaves her home early in the morning so that she can reach her office on time. If she walks at the rate of 7 km/hr, then she reaches her office 8 minutes late. But, if she walks at a speed of 8 km/hr, then she reaches her office 4 minutes early. What is the distance in km between Rehana's house and her office?
A 10.5
B 11.2
C 11.5
D 12.2
Rehana leaves her home early in the morning so that she can reach her office on time. If she walks at the rate of 7 km/hr then she reaches her office 8 minutes late. But, if she walks at a speed of 8 km/hr, then she reaches her 4 minutes early. What is the distance in km between Rehana's house and her office?
A 10
B 11.2
C 11.5
D 12
If Ram walks at the speed of 3 km/hr, then he reaches his school 6 minutes late but if he walks at the speed of 4 km/hr, then he reaches 4 minutes before the scheduled time. What is the distance (in km) of his school from his house?
A 1.8
B 2
C 3.5
D 4

Next steps