If x+y =9 and x-y =5, the value of 4xy is :
Tk 51 is distributed between Sumi and Meen in such a way that Sumi receives Tk 3 less than twice the amount received by Meem. The amount (in Taka) received by Sumi is :
The compound interest (in Taka) on Tk 200 at 10% in 3 years is approximately :
The ratio of ages of a father and his son his son was 5 : 1. What is the age of the son after five years, if the ratio of their ages is 3 : 1 by this time?
At a selling price of Tk 273 a book yields 30% profit. What selling price (in Taka) will yield the profit of 10%?
What is the volume of a cube that has a total surface area of 54?
The product of two numbers is 900 and their sum exceeds their difference by 30. the greater of these two numbers is :
If 30% of A =0.25 of B=1/5th of C, the ratio of A, B and C is ----
After paying 10% tax on all income over Tk 3000, Rahim had a net income of Tk 12,000. Rahim's income before tax (in Tk) was ----
A retail buyer purchases 15 white dress shirts for Tk 1000 and 5 striped dress shirts for Tk 400. At what average price (in Tk) the retailer should sell a dress shirt if he wants to make a profit of Tk 50 each shirt?
Alam spent 20% of his income on taxes and 20% of the reminder on rent. What per cent of his income he has spent on rent?
Which of the following is the lowest positive integer divisible by 2,3,4,5,6,7,8 and 9?
20 men can finish a work in 30 days. After how many days should 5 men leave the work so that the work may be finished in 35 days?
Three pipes can independently fill a water tank in 10,12 and 15 hours. How many hours will it take for all three pipes opened together to fill half of the tank?
In a class of 30 students 18 play football, 14 play cricket and 5 do not play any game. How many students play both the games?
If a : b is 4 : 7 and b : c is 5 : 6, then a : b : c is ---
A number is multiplied by 4 and then the product is divided by 100. This same result can be obtained if the original number is divided by ---
An amount of money becomes Tk. 1,860 at an interest rate of 8% in 3 years. How many years the money would take to become Tk. 2040 at the same interest rate?
There is a 2 meter wide rode surrounding a pond which is 60 meters long and 40 meters wide. The area (in sq meters) covered by the road is :
One half of a pole is deep into the soil under water, one-third of it is above the soil under water and 2 meters of it is above the water level. The total length of the pole in meters is :