৩১৯১১
নির্দিষ্ট দামে একটি দ্রব্য বিক্রি করতে ২০% ক্ষতি হলো। এটি ৬০ টাকা বেশি মূল্যে বিক্রি করতে ১০% লাভ হত। দ্রব্যটির ক্রয়মূল্য কত টাকা?
উত্তর
200
৩১৯১২
A, B and C invested capitals in the ratio of 4: 6: 9 At the end of the business term, they received the profit in the ratio of 2: 3: 5. Find the ratio of their time for which they contributed their capitals.
উত্তর
9 : 9: 10
৩১৯১৩
Some money is divided amongst three workers A ,B and C such that 5 times A's share is equal to 12 times B's share which is equal to 6 times C's share. The ratio between the shares of A ,B and C is?
উত্তর
12 : 5 : 10
৩১৯১৪
The ages of X and Y are in the proportion of 6:5 and total of their ages is 44 years. The proportion of their ages after 8 years will be
উত্তর
8:7
৩১৯১৬
Two tarins running in opposite direction cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is:
উত্তর
3 : 2
৩১৯১৭
A boat runs at 22 km per hour along the stream and 10 km per hour against the stream.Find the ratio of the speed of the boat in still water to that of the speed of the stream.
উত্তর
8 : 3
৩১৯১৮
In recent survey of the student of a public university. It is found that 65% students are good in Mathematics and 45% students are good in Mathematics and 45% students are good in Statistics. How many students are good in both Mathematics and statistics of the public university?
উত্তর
10%