Two trains are running in opposite directions with the same speed. If the length of each train is 120 meters and they cross each other in 12 seconds, then the speed of each train (in km/hr) is :
The average of first 50 natural numbers is :
In an election a candidate who gets 84% of the votes is elected by a majority of 476 votes. What is the total number of votes polled ?
A sum of money lent out at simple interest amounts to Tk. 720 after 2 years and to Tk. 1020 after a further period of 5 years. The sum is -
In a certain store, the profit is 320% of the cost. If the cost increases by 25% but, the selling price remains constant, approximately what percentage of the selling price is the profit ?
138.009+341.981-141.305=123.6+?
The square root of (7+35)(7-35) is:
If x=80%, by what percent is x larger than x^2 ?
The average wage of a worker during a fortnihgt comprising 15 consecutive working days was Taka 90 per day. During the first 7 days, his average wage was Taka 87 per day and the average wage during the last 7 days was Taka 92 per day. What was his wage on the 8th day ?
A man's regular pay is Taka 30 per hour up to 40 hours. Overtime is twice the payment for regular time. If he was paid Taka 1680, how many hours overtime did he work ?
The length of a rectangle is twice than that of its breadth. If the length of the rectangle is increased by 10%, while its breadth is decreased by 10% what is the percentage change in the perimeter ?
A can complete a project in 20 days and B can complete the same project in 30 days. A and B start working on the project together and A quits 10 days before the project is expected to be completed. How many days in total will the project take to complete ?
Halim purchased brand A pen for Taka 200 each and brand B per for Taka 100 each. If he purchased a total of 8 of these pens for Taka 1,200 how many pens of brand A did he purchased ?
Ahad buys 80kg sugar at Taka 40 per kg and 40 kg rice at Taka 50 per kg. At what price approximately in Taka per kg should he sell to make a profit of 10% on cost ?
Find the ratio of purchase price to sell price if there is loss of 12.5% ?
Find the area of a right angled triangle whose hypotenuse is 10 cm and base 8 m.
A is two years older than B who is twice as old as C. If the total age of A,B and C is 27, then how old is B ?
A person crosses a 600 meters long street in 5 minutes. What is his speed in kilometers per hour ?
For what value of 'K' will the pair of equations 3x+4y=12 and kx+12=30 does not have a unique solution ?
If one of the roots of the quadratic equation x^2+mx+24= 0 is x=1.5, then what is the value of m ?