If Abhi travels a certain distance at 6 km/hr, he reaches his destination 12 minutes early, but if he travels at 4 km/hr, he reaches his destination 10 minutes late. The speed (in km/hr) at which he should travel to reach his destination on time is?
Question
If Abhi travels a certain distance at 6 km/hr, he reaches his destination 12 minutes early, but if he travels at 4 km/hr, he reaches his destination 10 minutes late. The speed (in km/hr) at which he should travel to reach his destination on time is?
Solution
To solve this problem, we need to set up two equations based on the information given.
Let's denote:
- D as the distance Abhi needs to travel
- T as the time it should take him to reach his destination on time
From the problem, we know that:
-
If Abhi travels at 6 km/hr, he reaches his destination 12 minutes early. This means he travels for (T - 12/60) hours. So, we can write the first equation as: D = 6 * (T - 12/60)
-
If Abhi travels at 4 km/hr, he reaches his destination 10 minutes late. This means he travels for (T + 10/60) hours. So, we can write the second equation as: D = 4 * (T + 10/60)
Now we have a system of two equations, and we can solve it by setting them equal to each other:
6 * (T - 12/60) = 4 * (T + 10/60)
Solving this equation gives us T = 1 hour.
Now that we know the time it should take Abhi to reach his destination on time, we can find the speed he should travel at. We know that speed = distance/time, and we can use either of the original equations to find the distance. Let's use the first one:
D = 6 * (1 - 12/60) = 5 km
So, the speed Abhi should travel at to reach his destination on time is D/T = 5/1 = 5 km/hr.
Similar Questions
Select the correct answerKeith travels at the rate of 3 km/hr and he reaches 15 minutes late. If he travels at the rate of 4 km/hr, he reaches 15 minutes earlier. The distance Keith has to travel is:Options6 km1 km7 km12 km
Robert 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.?
Select the correct answerRanjeet drives his car at an average speed of 50 km/hr and reaches his destination in 8 hours. Rehman covers the same distance in 5 hours. If Ranjeet increases his speed by 10 km/hr and Rehman increases his speed by 20 km/hr, then what will be the difference between the times taken by them to reach the destination?
Select the correct answerA man starts from a place P and reaches the place Q in 7 hours. He travels 1/4th of the distance at 10 km/hour and the remaining distance at 12 km/hour.The distance between P and Q is?Options72 km80 km70 km90 km
B starts 4.5 minutes after A from the same point, for a place at a distance of 3.5 miles from the starting point. A on reaching the destination turns back and walk a mile where he meets B. If A’s speed is a mile in 6 minutes then B’s speed is a mile in _minutes?Options₹ 9₹ 10₹ 8₹ 12
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.