১১৯৩১
A person borrows Tk. 5,000 for 2 years at 4% p.a. simple interest. He immediately lends it to another person at 25/4 % per annum for 2 years. Find his gain in the transaction per year.
উত্তর
Tk. 112.50
১১৯৩২
Two trains running in opposite directions 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
১১৯৩৩
A tank has two leakages. The first leakage alone can empty the tank in 9 min and the second alone would have done it in 6 min. If water leaks out at a constant rate, how long does it take both the leakage together to empty the tank?
উত্তর
3.6 min
১১৯৩৪
The time taken by a man to travel 36 miles downstream is 90 min less than to go the same distance upstream. The speed of the man in still water is 10 mph. Find the speed of the stream?
উত্তর
2 mph
১১৯৩৫
A boat runs at 22 km 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
১১৯৩৬
In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling s constant, approximately what percentage of the selling price is the profit?
উত্তর
70%
১১৯৩৮
Sum of three different positive integers is the same as their product. What is the smallest of these 3 integers?
উত্তর
0
১১৯৪০
If x is an even number, what is the difference between the smallest even number grater than (5x + 6) and the largest even number less than (3x + 9)?
উত্তর
2x