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?
A. 1/14
B. 2/5
C. ½
D. 29/42
E. 1
সঠিক উত্তরঃ
C.
½
Explanation:
Related Questions (Any University/Year)
- On a certai project, the only grades awarded were 745 and 100. If 85 students completed the projects and the average of their grades was 85, how many of them did score 100?
- If y% of x is 29. Then x=?
- In the figure above area of the inscribed rectangle is 32. The circumference of the circle is-
- যদি x+y=৫ এবং x-y=৫ হয়, তাহলে xy এর মান কত?
- When positive integer x is divided by positive integer y, the remainder is 9. If x/y = 96.12, what is the value of y?
- Monti always jogs to school at a speed of 6 kilometers per hour, and walks home along the same route at a speed of 3 kilometers per hour. If he spends exactly one hour total traveling both ways, how many kilometers is his school from his home?
- ২ঃ৩ এর ব্যস্তানুপাত---
- If a 60 ml of water contains 20% of chlorine, how much water must be added in order to create a 12.5% chlorine solution?
- Ehsan was preparing to make a tape from some of his favourite songs. He noticed that Hadi's song was 1 minute longer than Bonna's song. Duration of Niaj's song was 1 minute shorter than twice the duration of Bonna's song. If the total time for these songs is 12 minutes, how long is Niaj's song?
- A woman was 30 years old when her daughter was born. Her age is now 6 years more than three times her daughter’s age. How old will be the daughter in 10 years?
- একটি উড়োজাহাজ ঘন্টায় ২৮০ মাইল গতিতে ৬ ঘন্টায় কোনো একটি নিদিষ্ট দূরত্ব অতিক্রম করে। উক্ত দূরত্ব ২ ঘন্টায় অতিক্রম করতে হলে উড়োজাহাজটির গতি কত হবে?
- Half the people on a bus get off at each stop after the first, and no one gets on after the first stop. If only one person gets off at stop number 7, how many people got on the first stop?
- A machine is producing 800 units per minute. If its productivity falls by a half percent, how many units will it produce now?
- 4/5 কে শতকরায় প্রকাশ করলে কত হয়?
- একটি ধাতব ঘন(cubical) বস্তুর ওজন ৮ কেজি।একই ধাতুর তৈরী আরেকটি ঘন বস্তু যার প্রতিটি বাহু দ্বিগুণ হলে বস্তুটির ওজন কত কেজ???
- If 14 farmers plough a field in three hours, how long will it take if 15 farmers to do the same job?
- If 2x+2x+2x+2x=2n, what is x in terms of n?
- The potato traders have increased the original price of potatoes by 20% by creating a false shortage of supply. Govt. intervened into the scene and forced the traders to reduce their price by 20% of new price and stick to that. Currently the traders are selling potatoes with a loss/gain of what percentage over the original price?
- In Hotel Sea View, the daily rate for an economic room, which can accommodate a maximum of four people, is Taka 800 for one person and Taka X for each additional person. If 3 friends take the room for one day and each pays Taka. 450 for the room, what is the value of X?
- Each of the following problem has a question and two statements which are labeled 1. and. Use the data given in 1. and 2. to decide whether the statements are sufficient to answer the question.Select one of the following . a.Statements (1) ALONE is sufficient,but (2) ALONE is not sufficient. b.Statements (2) ALONE is sufficient,but (1) ALONE is not sufficient. c. Both statement TOGETHER are sufficient but statement alone is sufficient . Is K a multiple of 6? (1)K is a multiple of 3. (2) K is a multiple of 12.
- The product of two numbers is 72. If 24 is their LCM what is their HCF?
- ৫টি বিড়াল ৫টি ইঁদুর ধরতে সময় লাগে পাঁচ মিনিট। ৩০টি বিড়াল ৩০টি ইঁদুর ধরতে কত সময় লাগবে ?
- in a picnic there were 240 persons. There were 20 more men than women and there were 20 more aduts than children. How many men were there in the picnic?
- The average age of a man and his son is 20. After 10 years, their age will be in the ratio 2:1. What was the age of the man and his son 5 years ago respectively?
- The average age of a team is 32.7 years. The average age of the males in the team is 33.2 years and the average age of the females is 32.2 years. What is the ratio of the number of females to the number of males in the team?