Two men P and Q Start from a place walking at 5 km /hr and 6.5 km/hr, respectively . What is the time they will take to be 92 km apart , they walk in opposite directions?
Two men, A and B, run a 4 km race in a circular course of 1/4 km. If their speeds are in the ratio of 5 : 4 , how often does the winner pass the other?
A sum of money amounts to Tk. 6690 after 3 years and to TK. 10035 after 6 years on compound interest . Find the sum.
Once card is drawn at random from a pack of 52 cards. What is the probability that the card drawn is a face card (Jack,Queen and King only)?
If two times of the daughter's age in years is included to the mother's age, the total is 70 and if two times of the mother's age is included to the daughter's age the total is 95. So the Mother's age is -
A student multiplied a number by 3/5 instead of 5.3. What is the percentage error in the calculation?
Ten years ago, A was half of B in age. If the ratio of their present ages is 3 :4 then what will be the total of their present ages?
The size of the wooden block is 5×10×20 cm. How many such blocks will be required to contract a solid wooden cube of minimum size?
The difference of two numbers is 20% of the larger number, If the smaller number is 20, then the larger number is -
12 buckets of water fill a tank when the capacity of each tank is 13.5 liters. How many buckets will be needed to fill the same tank ,the capacity of each buckets is 9 liters?
The sum of three numbers is 98 . If the ratio of the first to second is 2 :3 and that of the second to the third is 5 :8 , then the second number is -
If K : 1 = 4: 3 and l :m = 5 : 3 , then find K : l : m?
The value of 10+25+108+154+225 is
A 270 m long train running at the speed of 120 km /hr crosses another train running in opposite direction at the speed of 80 km/hr in 9 seconds. What is the length of the other train?
Three partners shared the profit in a business in the ratio 5 : 7 : 8 . They had partnered for 14 months, 8 months and 7 months respectively . What was the ratio of their investment ?
In a class, there are 15 boys and 10 girls . Three students are selected at random. The probability that 1 girl and 2 boys are selected, is -
An airplane flies along the four sides of a square at the speeds of 200, 400, 600 and 800 km/hr. Find the average speed of the plane around the field.
X can complete a certain work in the same time in which Y and Z together can do it . If X and Y together can finish it in 10 days and Z alone in 15 days , then Y alone can do it in ?
98.98 ÷11.03+7.014×15.99=?
A and B start a business with initial investment in the ratio 12 : 11 and their annual profits were in the ratio 4 : 1. If A invested the money for 11 months B invested the money for-
If m =7 -43 , then (m+1/m)=?
A container contains 40 liters of milk. From this container 4 liters of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained in the container?
In still water, a boat can travel at 5 km/hr. It takes 1 hour to row to a place and come back If the velocity of the stream is 1 km/hr, how far is the place?
A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paisa per m2 is -