Find a number such that when 15 is subtracted from 7 times the number, the result is 10 more than twice the number.
The difference of two numbers is 20% of the larger number. If the smaller number is 20, then the larger number is :
Two-fifth of one-fourth of three-seventh of a number is 15. When is half of that number?
A truck covers a distance of 550 metres in 1 minute where as a bus covers a distance of 33 kms in 45 minutes. The ratio of their speeds is :
A sum of Tk. 312 was divided among 100 boys and girls in such a way that each boy gets Tk. 3.60 and each girl Tk. 2.40. The number of girls is :
The compound interest on a certain sum for 2 years at 10% per annum is Tk. 525. The simple interest on the same sum for double the time at half the rate percent per annum is :
The greatest number that exactly divides 105, 1001 and 2436 is :
The angle between the minute hand and the hour hand of a clock when the time is 8.30, is :
The sum of the ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?
The simple interest on a sum of money will be Tk. 600 after 10 years. If the principal is trebled after 5 years, what will be the total interest at the end of the tenth year?
If a and b are odd numbers, then which of the following is even?
A can run 22.5 m while B runs 25 m. In a kilometer race B beats A by :
54 is to be divided into two parts such that the sum of 10 times the first and 22 times the second is 780. The bigger part is :
A train of length 150 metres takes 40.5 seconds to cross a tunnel of length 300 metres. What is the speed of the train in km/hr?
A and B can work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in :
A 6% stock yields 8%. The market value of the stock is :
0.213+0.00213=?
Two whole numbers whose sum is 72 cannot be in the ratio :
The average of six numbers is 3.95. The average of two of them is 3.4, while average of the other two is 3.85. What is the average of the remaining two numbers?
A man can row upstream at 8 kmph and downstream at 13 kmph. The speed of the stream is :
The length of a rectangle is 18 cm and its breadth is 10 cm, When the length is increased to 25 cm, what will be the breadth of the rectangle if the area remains the same?
Aunik and Anam started a business investing Tk. 22,500 and Tk. 35,000 respectively. Out of a total profit of Tk. 13,800, Anam's share is :
The least perfect square number divisible by 3, 4, 5, 6 and 8 is :
On selling 17 balls at Tk. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is ----
Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opended together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?