স্রোতের প্রতিকূলে যেতে যে সময় লাগে, অনুকূলে যেতে তার অর্ধেক সময় লাগে। যাতায়াতে যদি ১২ ঘন্টা সময় লাগে, তাহলে স্রোতের অনুকূলে যেতে কত ঘন্টা সময় লাগবে?
A. ৬
B. ৪
C. ৭
D. ৪
সঠিক উত্তরঃ
D.
৪
Explanation:
Related Questions (Any University/Year)
- Three partners A, B, C invest Tk.26000, Tk.34,000 and Tk.10000 respectively in a business. Out of a profit of Tk. 3500, B's share is
- The electric company charge: Tk 0.3 per KWH. Rahim used 2800 KWH in April, 3200 KWH in May, and 3600 KWH in June. What was his average costs of electricity in taka for the 3 months?
- চিত্রে DE || BC. একটি ত্রিভুজ ADE এর ক্ষেত্রফল DECB ট্রাপিজিয়ামের ক্ষেত্রফলের অর্ধেক হলে AE : AC কত?
- Which of the following fractions is the smallest ?
- A and B can do a job in 12 days, B and C can do the job in 18 days and A and C can do the job in 9 days. In how many days A alone can finish the work?
- The length of each side of square A is increased by 100 percent to make square B. Again the length of each side of square B is increased by 50 percent to make square C. By what percent is the area of square C greater than the sum of the areas of square A and B?
- Last year Jackie saved 5% of her annual salary. This year, she made 10% more money and saved 8%. The amount saved this year was what percent of the amount saved last year?
- Instructions: DO NOT USE CALCULATOR. Figures are not drawn to scale. In a particular course, Arif appeared in 10 quizzes. The average of his best 9 quizzes is 10% more than the average of all the quizzes he attended. The total marks obtained in best 9 quizzes is what percent of the total marks obtained in 10 courses?
- In a coffee mixture, the ratio of coffee. milk, sugar and cream are mixed by the weight in the ratio of 5:3: 2: 2 respectively. How many kg of coffee are there in 18 kgs of the mixture?
- In a shipment of 120 machine parts, 5% were defective. In another shipments of 80 machine parts, 10% were defective. For the two shipments combined, what percent of machine parts were defective?
- The present ratio of students to teachers at a certain school is 30 to 1. If the student enrollment were to increase by 50 students and the number of teachers were to increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teachers?
- A trader purchased some pen for TK 120. If the price of each pen were Tk. 3 less, he would have got 2 more pens, How many pens did he buy?
- A hospital needs 150 pills to treat 6 patients for a week. How many pills does it need to treat 10 patients for a week?
- An employee can choose one of two methods of annual payment either an annual salary of Tk. 35,000 with no commission or an annual salary of Tk. 10,000 plus a 20% commission on her annual sales. What must be her total annual sales to get the same annual payment in either method?
- Rayaan purchased equal number of bananas at two different rates-one at the rate of 8 taka per dozen and the other at the rate of 10 taka per dozen. After that, he sold those bananas at an average rate of 11 taka per dozen and thus made a profit of 100 taka. How many dozens of banana did he purchase altogether?
- If x is positive integer and y > -2 , which of the following must be positive ?
- টি টুয়েন্টি ক্রিকেটে ষোলটি দল নক আউট পদ্ধতিতে ফাইনাল পর্যন্ত খেললে মোট কয়টি ম্যাচ অনুষ্ঠিত হবে ?
- There are 5 machines that make 5 parts in 5 minutes. How long does it take to make 100 parts on 100 machines?
- The ratio of quantity of water in fresh fruit to that of dry fruits is 7 : 2 . If 400 km of dry fruits contain 50 km of water then find the weight of the water in same fruits when they were fresh?
- The population of City X is 40% of the population of city Y. The population of city X is what percent of city X and city Y together?