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question_answer1) There are 152 students in a class. Each of the students contributed Rs. 40 for planting trees around the school. If planting one tree costs Rs. 20, how many trees can be planted by the money collected from the students?
question_answer2) If 16 liters of petrol is consumed by a car in covering a distance of 4864 km, how many kilometers will it go in 32 liters of petrol?
question_answer3) If 15 books cost Rs. 2540, find the cost of 24 books.
question_answer4) A car runs at km/h. After 2 hours the speed of the car is increased by 7 km/h for 3 hours. Find the average speed of the car.
question_answer5) 25 persons can finish a work in 16 days. How many persons are required to finish the work in 10 days?
question_answer6) There are 15 packets of pens. Each packet contains 24 pens. If cost of 4 pens is Rs. 25, find the cost of all pens contained by all 15 packets.
question_answer7) Jennifer makes 30 equilateral triangles of equal perimeter. She colors 24 triangles with red and remaining triangles with blue. Colouring 2 triangles with blue cost as much as colouring 3 triangles with red. If colouring 1 triangle with red costs Rs. 10, find the cost of colouring all triangles.
question_answer8) In a map, scale has been chosen as 2.5 cm = 25000 km to measure the distance. If distance between two cities A and B is 12.3 cm on the map. Find the actual distance between A and B.
question_answer9) A car is running at a uniform speed of 130 km per hour. It has to cover the distance 910 km. After covering 520 km, the car has to stop at a place for half an hour due to traffic. By how much should speed of the car be increased such that it could compensate the wasted time?
question_answer10) 33 workers can build a house in 14 days. How many days will 21 workers take to build a similar house?
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