\(x=y-(50/y)\), where x and y are both positive numbers. If the value of y is doubled, the value of x will.
A. Decrease
B. stay the same
C. double
D. increase to more than double
Explanation: y কে double করা হলে x এর নতুন value হয় \(2y - (50/2y) = 2y - 25/y\). যেহেতু এই expression টির positive part টি doubled হয় (\(y\) becomes \(2y\)) এবং negative part টি halved হয় (\(50/y\) becomes \(25/y\)) x এর value will increase to more than double. For example, যদি \(y=25\) হয়, \(x=25-(50/25)=23\). Y কে double করা হলে \(y=50\), \(x\) এর নতুন value হয় \(=50-(50/50)=49\) which is more than double of 23, the previous value of x.
Related Questions (Any University/Year)
- The average of three numbers is 6 and the average of four numbers including the previous three numbers is 8. What is one half of the fourth number?
- In the first 10 overs of a cricket game,the run rate was only 3.2.what should be the run rate in the reamaining 40 overs to reach the target of 282 runs?
- 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?
- If, x+y>4 and x1 is true
- যদি ৬ জন বালক ৬ মিনিটে ৬ পৃষ্ঠা লিখতে পারে তাহলে ১ জন বালকের এক পৃষ্ঠা লিখতে কত সময় লাগবে?
- How many flowers are there if all of them are roses except two, all of them are tulips except two and all of them are daisies except two?
- A sum of money is divided among three persons in the ratio 4:6:9. If the largest share is Tk. 1000 more than the smallest share, what is the total sum
- কাফি ও খলিল একটি কাজ যথাক্রমে ১০ দিনে ও ১৫ দিনে করতে পা??ে। তারা একত্রে কাজটি কত দিনে করতে পারবে?
- The foot of a ladder is 2m away from a vertical wall. The height of the top of the ladder is ½ m less than the length of the ladder. What is the length of the ladder?
- The ratio of boys and girls in a school is 9:5.If the total number of students in the school is 1050.Then number of boys is
- The figure below shows a path around a triangular piece of land. Mary walked the distance of 8 miles from P to Q and then walked the distance of 6 miles from Q to R. If Taha walked directly from P to R, by what percent did the distance that Mary walked exceed the distance that Taha walked?
- It takes 30 days to fill a laboratory dish with bacteria, If the size of the bacteria doubles each days, how long will it take for the bacteria to fill one-----half of the dish?
- Sally gets paid x dollars per hour for a 40-hour work week and y dollars for each hour she works over 40 hours. How much did Sally earn if she worked 48 hours?
- \( 0.001 \div 0.1 \times 0.1 = ? \)
- If P denotes + Q denotes - R, denots +and S denotes X, then what is the value of 18s36R12Q6p7?
- If a, b and c arc 3 consecutive integers and a>b>c, which of the following hasthe maximum value?
- 42 m দৈর্ঘ্যের রাস্তায় 2m অন্তর একটি করে চারা লাগালে কতটি চারা লাগবে?
- The ration of 1/4 to 3/5 is
- In a room, all except 18 of the people are above 50 years of ages. If 15 of the people in the room are under 50 years of age. How many people are in the room?
- ব্যাংকে বিদ্যুৎ বিল দেওয়ার জন্য ৪০ জন লোকের একটি লাইন আছে যেখানে শুরু থেকে পঞ্চম স্থানে শাহীন এবং পিছন থেকে অষ্টম স্থানে জাহিদ দাঁড়িয়ে আছে। লাইনে আর কেউ না আসলে শাহীন ও জাহিদের মাঝে কতজন দাঁড়িয়ে আছে?