A এবং B একটি কাজ ৮ ঘন্টায় সম্পন্ন করতে পারে। C এবং D একই কাজ ১২ ঘন্টায় সম্পন্ন করতে পারে। যদি চারজন একই সাথে কাজ করে, তাহলে উক্ত কাজটি সম্পন্ন করতে আনুমানিক কত সময় লাগবে?
A. ৩.৬০ ঘন্টা
B. ৪.৫০ ঘন্টা
C. ৪.৮০ ঘন্টা
D. ১০.০০ ঘন্টা
সঠিক উত্তরঃ
C.
৪.৮০ ঘন্টা
Explanation:
Related Questions (Any University/Year)
- একটি সংখ্যা ৩০১ হতে যত বড় ৩৮১ হতে তত ছোট। সংখ্যাটি কত?
- The speeds of three cars are in the ratio 2 : 3 : 5. The ratio of the times taken by these cars to travel the same distance is
- If the car starts journey from 'C' to 'D' at 12 am, at which time will it be back to 'C' (the car does not stop at D)?
- There is 50% chance that Rafiq will go to a fast-food restaurant for lunch and 50% chance that he will skip lunch. If he goes to a fast-food restaurant there is 60% chance that he will take only a sandwich and nothing else. If he decides not to take a sandwich, he will take a burger of a chicken pie. What is the probability that he will take a burger?
- In an increasing sequence of 10 consecutive integers , the sum of the first integers is 560.What's the sum of the last 5 integers in sequence?
- যদি 2 × 3 = 812, 4 × 5=1620 হয় তবে 6 × 7 = কত?
- Asif is now 14 years older than Saif. If in 10 years Asif will be twice as old as Saif. How old will Asif be in 7 years?
- 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?
- If a and b possible integers and (a1/2b1/3)6 =432, what is the value of ab?
- Amir and Hannan working together can finish a work in 3 hours. If they work alone, Hannan takes 3 times as long as Amir. How long does Hannan take to finish the job alone?
- In Township K each property is taxed at 8 percent of its assessed value. If the assessed value of a property In Township K is increased from $20,000 to $24,000, by how much will the property tax increase?
- এক ব্যক্তি তাঁর স্ত্রীর চেয়ে ৩ বছরের বড় এবং তাঁর স্ত্রীর বয়স তাদের ছেলের বয়সের ৪ গুণ। ৪ বছর পর ছেলের বয়স ১২ বছর হলে সেই ব্যক্তির বর্তমান বয়স কত ?
- Of the 400 students in a business school, 30% were women and of these 1/5 th became entrepreneurs. If the number of men who became entrepreneurs was twice the number of women entrepreneurs, how many men became entrepreneurs?
- A man traveled one-fourth of the total distance of his trip by car . He traveled the remaining distance on foot . The ratio of his walking time to driving time was 15:1 . Calculate the ratio of his driving speed to his walking speed .
- 15 workers can finish a job in 12 days. They work for 4 days, after which 5 additional workers join the team. In how many days will all of them together complete the remaining job?
- At Veridux Corporation, there are 250 employees. Of these, 90 are female, and the rest are males. There are a total of 40 managers, and the rest of the employees are associates. If there are a total of 135 male associates, how many female managers are there?
- একটি মানচিত্রে ৩/৮ ইঞ্চি দূরত্ব ৫০ মাইলের সমান। দুটি শহরের মধ্যবর্তী দূরত্ব ৩.৭৫ ইঞ্চি। শহর দুটির প্রকৃত দূরত্ব কত?
- If 2n=n2, then which of the following must be true?
- The price of sugar has increased by 32%. A family reduces its consumption so that the expenditure of sugar is up by 10% only. If the total consumption of sugar before the price rise was 10 kg per month, what is the consumption of sugar per month ( in kg )?
- Three friends - Anwar, Bobby and Dipu divided Tk. 1105 amongst them in such a way that if Tk. 10, Tk. 20 and Tk. 15 were removed from the amount that Anwar, Bobby and Dipu received respectively, then the share of the amount they got would be in the ratio of 11: 18: 24. How much did Dipu receive?