A train covers the distance y miles between two cities at a speed of x mph, arriving 2 hours late. What speed would permit the train to arrive on schedule?
A.
y/(x-2y) mph
B.
y/(x+2y) mph
C.
(xy)/(x-2y) mph
D.
(xy)/(y-2x) mph
E. None of these
সঠিক উত্তরঃ
E.
None of these
Explanation:
Related Questions (Any University/Year)
- Working independently, Sourodip can perform a certain task in 6 hours and Eshanee can perform it in 7 hours. If Sourodip and Eshanee work together for 3 hours, and then Sourodip leaves, how many hours will it take Eshanee to complete the task alone?
- There are 209 doctors and nurses in a hospital. If the ratio of the doctors to the nurses is 11: 8, then how many nurses are there in the hospital?
- A and B together can complete a piece of work in 72 days, B and C together in 120 days and A and C together in 90 days. A, B and C together can complete the work in?
- Sabina needs to make a cake and some cookies. The cake requires 3/8 cup of sugar and the cookies require 3/5 cup of sugar. Sabina has 15/16 cup of sugar. Does she have enough sugar, or how much more does she need?
- If a family was randomly picked from the families in the previous question, what is the probability (approximately) of that family having working mothers as member?
- A triangle has an angle of 82 degree The ratio of the other two angles is 2: 5 what is the smallest angle of the triangle?
- A & B are two towns. Farooq covers the distance from A to B on cycle at 16 km/hr. however he covers the 'distance from B to A on foot at g km/hr. his average speed during the whole journey is:
- Rashid deposits Tk. 1200 from his salary in the first month. In every subsequent month, he deposit Tk. 100 more than the amount deposit in the previous month. What will be the total amount of his deposit in 18 months?
- তিনটি মেশিন একটি কাজ যথাক্রমে ৪, ৫, ৬ ঘণ্টায় করতে পারে। দুইটি মেশিন সর্বোচ্চ ক্ষমতায় কাজ করে এক ঘণ্টায় কতটুকু কাজ করতে পারে?
- In the following figure, what is the area of square QRST?
- If (x -y=2) and (xy =3) , then (x + y =?)
- A scientist needs a 10% saline solution for an experiment. In his closet he finds a 20 ounce bottle of 25% saline solution. How many ounces of pure water should he add to the mixture to produce the correct saline solution‘?
- ঢাকা থেকে টাঙ্গাইলের দূরত্ব ৪৫ মাইল। করিম ঘণ্টায় ৩ মাইল বেগে হাঁটে এবং রহিম ঘণ্টায় ৪ মাইল বেগে হাঁটে। করিম ঢাকা থেকে রওয়ানার এক ঘণ্টা পর রহিম টাঙ্গাইল থেকে ঢাকা রওয়ানা হয়েছে। রহিম কত মাইল হাঁটার পর করিমের সাথে দেখা হবে?
- A bus is travelling with 60 passengers. When it arrives at a stop, x number of passengers get off and 8 get on. At the next stop, on third of the passengers on board get off and 5 get on. There are now 37 passengers on the bus. Find x.
- After 2 females leave a party there are twice as many males as females. Then 9 males leave the party and there are twice as many females as male. How many females attended the party?
- if one half of female students enjoy watching movies and one-third of male students do not like to watch movies, what frictional part of the student body enjoys watching movies?
- Nakir and Sabir is twin brother. Their combined age now is equal to their father's age. After 10 years
- If a certain vase contains only roses and tulips, how many tulips are there in the vase?i. The number of roses in the vases is 4 times the number of tulips in the vase.ii. There is total of 20 flowers in the vase
- \( 0.001 \div 0.1 \times 0.1 = ? \)
- Ms Zareen purchased stock for TK. 15,000 and I sold 2/3 of it after its value doubled. She sold the remaining stock at 5 times higher then its purchase price. What was her total profit?