At a simple interest rate of 10% per year , how many years will it take for a principle amount of Tk. 500 to earn an interest amount of Tk. 100. ?
Sum of two numbers is 15 and their difference is 13. Identify the smaller number.
For a 20% decrease in the radius of a circle, what will be the percentage reduction in its area?
Of the following which is the greatest ?
0.03 times of 0.05 is -
In an office , the ratio of female to male employees is 1 : 4 what percentage of the employees are male ?
If 1/y= 31/2 , then 1/y+2 =?
The average of three numbers is 24. . If two of the numbers are 21 and 23, the third number is --
A train took 6 minutes to travel between two stations 4 miles apart. What was the speed of the train in miles per hour?
For (a+b) =7 and ab = 12, (a-b) =?
Mr. X lost a wallet containing Tk. 120 . Incidentally, he had only notes of Tk. 2 and Tk. 5 denominations in the wallet . If the total number of notes was 30 , how many Tk. 5 denomination notes did he have?
How much fence will be needed to enclose a rectangular field that is 600 cm wide and 3000 cm long?
How many prime numbers are there between 45 and 72?
Volume of a water tank is 192 cft. Its length ,breadth, and height are in proportions 4: 3:2 . --- what is the area of its base in square feet?
The price per unit of a product increases by 25% . The actual Taka increase in the unit price is Tk.1.25. What was the unit price in Taka before the price increase?
If the average of 2x and 4x is 12, then x is equal to
If 3x +9 =15, then x +2 =?
x2-y2=?
A book sells for Tk. 65. This price gives the seller a profit of 30% on his cost. what would be the new selling price if he cuts his profit 10% of the cost?