Machine A produces bolts at a uniform rate of 120 every 40 seconds, and Machine B produces bolts at a uniform rate of 100 every 20 seconds. If the two machines run simultaneously, how many seconds will it take for them to produce total of 200 bolts?
A. 22
B. 25
C. 28
D. 32
সঠিক উত্তরঃ
B.
25
Explanation:
Related Questions (Any University/Year)
- The speed of a motor boat is 20 km/hr. for covering the distane of 15 km the boat took 1 hour more for upstream than downstream. Let speed of the stream be x km/hr, then speed of the motorboat in upstream will be-
- A can do work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is:
- Diana bought a stereo for $530, which was the retail price plus a 6 percent sales tax. How much money could she have saved if she had bought the stereo at the same retail price in a neighboring state where she would have paid a sales tax of 5 percent?
- Six years from now, Afnan's age will be the square of her age six years ago. What is Afnan's age?
- ০.০০১ x ১০০০ = =?
- The least integer of set of consecutive integers is- 25. If the sum of these integers is 26, many integers are in this set?
- A farmer had 17 hens. All but 9 died. How many live hens were left?
- The average salary of Arif and Babu is Tk. 10,000 and that of Sabbir and Babu is Tk. 12,000. What is the difference between Sabbir's salary and Arif's salary?
- If X4=81 and Y2= 49, then maximum possible value for Y-X is
- যদি পরপর ৫টি পূর্ণ সংখ্যার গাণিতিক গড় ১২ হয় তবে এ ৫ টি পূর্ণ সংখ্যার মধ্যে ক্ষুদ্রতম ও বৃহত্তম সংখ্যার যোগফল কত?
- There are 12 men on basketball team , and in a game 5 of them play at any one time. If the game is 1 hour long and if each man plays exactly the same amount of time, how many minutes each man play?
- A computer is programmed to add 3 to the number N, multiply the result by 3, subtract 3, and divide this result by 3. The computer answer will be
- What is the average of four tenths and five thousandths?
- If Ruby walks to work at a rate of 2 miles per hour, but she walks home by the same route at a rate of 3 miles per hour, what is Ruby's average walking rate in miles for the round trip?
- n denotes the number obtained when n is rounded to the nearest tenth. For example 4.31=4.3 0.089-1.135=
- A bus uses one gallon of petrol to travel 15 km. After a tune-up, the bus travels 15% farther on one gallon. How many gallons of petrol will it take for the bus to travel 150 km after a tune-up?
- A nut mixture consists of peanuts, pistachios, and macadamia nuts in the ratio 5:3:2, respectively, by weight. What amount of pistachios will be in 40 pounds of the mixture?
- ক্রয়মূল্য : বিক্রয়মূল্য = ৫ : ৬ হলে লাভ কত?
- Lima is 6 years older than her sister Sharmin, and Jamal is 5 years older than Lima. If the total of their ages is 41, how old is Jamal?
- A dishonest milkman professes to sell his milk at cost price but he mixes it with water and there by gains 25% . The percentage of water in the mixture is: