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(i) Number of students in a hostel and consumption of food. (ii) Area of the walls of a room and the cost of white washing the walls. (iii) The number of people working and the quantity of work. (iv) Simple interest on a given sum and the rate of interest. (v) Compound interest on a given sum and the sum

asked Jan 17, 2022 in 8th-maths by krutika (1.7k points)

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The variable x varies directly as y and x = 80 when y is 160. What is y when x is

asked Jan 17, 2022 in 8th-maths by Simran (1.8k points)

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A car covers a distance in 40 minutes with an average speed of 60 km/h. What should be the average speed to cover the same distance in 25

asked Jan 17, 2022 in 8th-maths by Simran (1.8k points)

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The mass of an aluminium rod varies directly with its length. If a 16 cm long rod has a mass of 192 g, find the length of the rod whose mass is 105

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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A car travels a distance of 225 km in 25 litres of petrol. How many litres of petrol will be required to cover a distance of 540 kilometres by this

asked Jan 17, 2022 in 8th-maths by uday (1.6k points)

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From the following table, determine if x and y are in direct proportion or not. x 1 4 9 20 y 1.5 6 13.5 20

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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30 persons can reap a field in 17 days. How many more persons should be engaged to reap the same field in 10

asked Jan 17, 2022 in 8th-maths by Simran (1.8k points)

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The variable x is inversely proportional to y. If x increases by p%, then by what per cent will y

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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What will be the change in the volume of a cube when its side becomes 10 times the original

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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160 `m^3` of water is to be used to irrigate a rectangular field whose area is 800 `m^2`. What will be the height of the water level in the

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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If the height of a cylinder becomes `1/4` of the original height and the radius is doubled, then which of the following will be

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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The volume of a cylinder whose radius r is equal to its height

asked Jan 17, 2022 in 8th-maths by Simran (1.8k points)

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The area of a parallelogram is 60 `cm^2` and one of its altitude is 5 cm. The length of its corresponding side

asked Jan 17, 2022 in 8th-maths by yogita (1.8k points)

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A metal sheet 27 cm long, 8 cm broad and 1 cm thick is melted into a cube. The side of the cube

asked Jan 17, 2022 in 8th-maths by uday (1.6k points)

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A trapezium with 3 equal sides and one side double the equal side can be divided into __________ equilateral triangles of _______

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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The area of a rectangular field is 48 `m^2` and one of its sides is 6m. How long will a lady take to cross the field diagonally at the rate of 20

asked Jan 17, 2022 in 8th-maths by yogita (1.8k points)

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Find the perimeter of the given figure.

asked Jan 17, 2022 in 8th-maths by uday (1.6k points)

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A bicycle wheel makes 500 revolutions in moving 1 km. Find the diameter of the

asked Jan 17, 2022 in 8th-maths by yogita (1.8k points)

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Find the length of the largest pole that can be placed in a room of dimensions `12 m xx 4 m xx 3 m`. Find the area of the following fields. All dimensions are in

asked Jan 17, 2022 in 8th-maths by yogita (1.8k points)

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asked Jan 17, 2022 in 8th-maths by nishit (1.8k points)

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