The difference between simple and compound interest on a sum of money at 20% per annum for 3 years is Tk. 48. What is the sum ?
If A and B are in the ratio 3 : 4 and B and C in the ratio 12 :13 then A and C will be in the dratio-
A bag contains an equal number of one rupee , 50 paisa and 25 paisa coins . If the total value is TK. 35 , how many coins of each type are there?
If 40% of a number is equal to two -third of another number, what is the ratio of first number to the second number ?
A man starts climbing a 11 m high wall at 5 pm. In each minute he climbs up 1m but slips down 50 cm. At what time will he climb the wall?
Two trains of equal length , running in opposite directions, pass a pole in 18 and 12 seconds. The trains will cross each other in -
A boat can travel with a speed of 13 km/hr in still water . If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream .
A bag contains 4 white , 5 red and 6 blue balls. Three balls are drawn at rand dom from the bag .The probability that all of them are red.is :
The ratio between the perimeter and the breadth of a rectangle is 5 :1 . If the area of the rectangle is 216 cm2. what is the lenth of the rectangle?
If the perimeter of a certain rectangle is 76 m and its area is 360 m2 , then what is the length of its shortest side ?
The simple interest received on a sum of money at the end of 10 years is two times of the principle. At the same rate of interest, what would be the ratio of principal and compound interest received at the end of two years?
A student is to answer 10 out of 13 questions in an examination such that he must choose at least 4 from the first five questions . The number of choices available to him is .
For what value of x is 82x-4=16x?
Three dice are thrown together . Find the probability of getting a total of at least 6 ?
In a college Rahim scored 80 marks out of 150 in History and 95 marks out of 120 in English . If he wants to score 70% marks in 3 subjects, find the minimum marks she should score in Geography out of 100.
If x = 1 +2 and y=1 -2, find the value of (x2+y2) .
x can do a piece of work in 20 days and Y can do the 1/7th of the same work in 5 days. In how many days together they can complete the 11/14th of the total work?
The circumference of the circle and teh perimeter of the square is equal and the ratio between the diameter of the circle and the side of the square is 7 :11 . What is the area of the circle ?
The average weight of teacher is also included, then the average weight is increased by 200 grams. Find the weight of the teacher?
A train can cross another train of equal length coming form the opposite direction with the speed of 108 km/h in 3 minutes . The speed of the other train is 90 km/h. Find the length of the train .