√ 60 + √ 15 - √ 135 =?
The ratio of boys and girls in a class is 1 : 2 and the classroom has 24 students. How many boys would have to be admitted to make ratio of boys to girls 1 : 1?
Which one of the following fractions is the smallest?
if 1/2 of the money in a certain trust was invested in stocks, 1/4 in bonds, 1/5 in a mutual fund, and the remaining Tk. 10,000 ina government certificate, what was the total amount of the trust fund?
In a university, 80 percent of the students lived in hostel, and 60 percent of the hostel students are lucky to get a single room. If number of lucky students is 1200, then how many students were there in the university?
X sells a product to Y and makes a profit of 25%. Y sells it to Z at a loss of 20%. If Z buys it for Tk. 140, what is X's purchase price?
On selling an article for Tk. 550, a man gains 10%. What will be the selling price, if desired profit is 20%?
A can do a piece of work in 15 days and B can do it in 10 days. Working together how long will they take to finish the work?
If the length of a rectangle is 8 cm and its diagonal is 10 cm, find its area.