A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is;
There is 60% increase in an amount in 6 years at simple interest. What will be i the compound interest of Tk. 12,000 after 3 years at the same rate?
It was Sunday on Jan 1, 2006. What was the day of the week Jan 1, 2010?
A room 5m x 8m is to be carpeted leaving a margin of 10 cm from each wall. If the cost of the carpet is Tk. 18 per sq. meter, the cost of carpeting the room will be:
A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:
3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?
The three rational numbers between 3 and 4 are:
In triangle ABC, if AB-BC and ∠B=70°, ∠A will be:
A car owner buys petrol at Tk. 17, Tk. 19 and Tk. 20 per litre for three consecutive years. Computer the average cost per litre, if he spends Tk. 6460 per year.
How many terms are there in 20, 25, 30......140?
A shopkeeper carns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of the cost price and the printed price of the book is
If A and B together can complete a work in 18 days. A and C together in 12 days, and B and C together in 9 days, then B alone can do the work in-
If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work?
Kamal started a business investing Th 9000. After five months, Sammer joined with a capital profit of Tk. 6970, then what will be the share of Sammer in the profit?
The angle of elevation of a ladder leaning against a wall is 60" and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is-
Father is aged three times more that his son Ronit. After 8 years, he would be two and a half tims of Ronit's age. After further 8 years, how many times would he be of Ronit's age?
An accurate clock shows 8 o'clock in the morning. Through how may degrees will the hour hand rotate when the clock shows 2 o'clock in the afternoon?
66 cubic centimeters of silver is drawn into a wire 1 mm in diameter. The length of the wire in meters will be-
Find the greatest number that will divide 43, 91 and 183 so as to leave the same remainder in each case.
In order to obtain an income of Tk. 650 from 10% stock at Tk. 96, one must make an investment of-
If 4b2+1b2=2, then the value of 8b3+1b3 is?
2. If a3=117+b3 and a=3+b , then the value of a + b is?
The population of a village decreases at the rate of 20% per annum. If its population 2 years ago was 10000, the present population is=?
A student scores 55% marks in 8 papers of 100 marks each. He scores 15% of his total marks in English. How much does he score in English?
The ratio of the number of boys and girls in a college is 7: 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?
Two buses start from a bus terminal with a speed of 20 km/h at interval of 10 minutes. What is the speed of a man coming from the opposite direction towards the bus terminal if he meets the buses at interval of 8 minutes?
In triangle PQR length of the side QR is less than twice the length of the side PQ by 2 cm. Length of the side PR exceeds the length of the side PQ by 10 cm. The perimeter is 40 cm. the length of the smallest side of the triangle PQR is:
The hypotenuse of a right triangle is 2 centimeters more than linger side of the triangle. The shorter side of the triangle is 7 centimeters less than the longer side. Find the length of the hypotenuse.
What was the total budget proposed by the Finance Minister for 2021-2022 ?
In a 729 liters mixture of milk and water, the ratio of milk to water is 7:2. to get a new mixture containing milk and water in the ratio 7: 3, the amount of water to be added is-
A man purchased a cow for Tk. 3000 and sold it the same day for Tk. 3600, allowing the buyer a credit of 2 years. If the rate of interest be 10% per annum, then the man has a gain of-