৩১২০১
A bell rings every 15 minute. If the bell rang at 12.40, which of the following could be a time at which the bell had sounded?
উত্তর
8:10
৩১২০২
Mr. Ali decided to walk down the escalator of a tube station. He found that if he walks down 26 steps, he requires 30 seconds to reach the bottom. However, if he steps down 34 stairs he would only require 18 seconds to get to the bottom. If the time is measured from the moment the top step begins to descend to the time he steps off the last step at the bottom, find out the height of the stair way in steps?
উত্তর
46 steps
৩১২০৪
Two numbers are respectively 20% and 50% mor than a third number. The ratio of the two numbers is:
উত্তর
4 : 5
৩১২০৫
ক একটি কাজ ৩০দিনে করতে পারে,খ ১৫দিনে ও গ ১০দিনে করতে পারে। প্রতি ২য় দিনে খ এবং ৩য় দিনে গ ক-কে সাহায্য করলে ঐ কাজটি কত দিনে শেষ হবে?
উত্তর
10
৩১২০৮
A man purchased equal number of banans 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?
উত্তর
50
৩১২০৯
The rent of a quest house if Tk. 50 per day for the first three days Tk. 100 per day for the next 5 days and Tk. 300 per day for to the days. The registration fee in the beginning in Tk. 50. If one has to pay Tk. 1300 for how many days has her availed this facility?
উত্তর
1075
৩১২১০
The contents of a certain box consist of 9 apples and 27 oranges. How many oranges must be removed from the box so that 70% of the pieces of fruits in the box will be apples?
উত্তর
6