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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 nikhil (1.8k points)

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(i) The quantity of rice and its cost. (ii) The height of a tree and the number of years. (iii) Increase in cost and number of shirts that can be purchased if the budget remains the same. (iv) Area of land and its cost. (v) Sales Tax and the amount of the

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

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If x varies inversely as y and x = 20 when y = 600, find y when x =

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k 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 sumit (1.6k points)

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l varies directly as m and l is equal to 5, when m = `2/3` . Find l when m = `16/3`

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

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If x varies inversely as y and y = 60 when x = 1.5. Find x. when y =

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

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In a camp, there is enough flour for 300 persons for 42 days. How long will the flour last if 20 more persons join the

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

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A contractor undertook a contract to complete a part of a stadium in 9 months with a team of 560 persons. Later on, it was required to complete the job in 5 months. How many extra persons should he employ to complete the

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

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Sobi types 108 words in 6 minutes. How many words would she type in half an

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k 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 uday (1.6k points)

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It is given that l varies directly as m. (i) Write an equation which relates l and m. (ii) Find the constant of proportion (k), when l is 6 then m is

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

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If a deposit of Rs 2,000 earns an interest of Rs 500 in 3 years, how much interest would a deposit of Rs 36,000 earn in 3 years with the same rate of simple

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

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Find the values of x and y if a and b are in inverse proportion: a. 12 x 8 b. 30 5

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

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If Naresh walks 250 steps to cover a distance of 200 metres, find the distance travelled in 350

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k 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 Simran (1.8k points)

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From the following table, determine if x and y are in direct proportion or not. x 3 6 15 20 30 y 12 24 45 60 120

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

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From the following table, determine if x and y are in direct proportion or not. x 4 7 10 16 y 24 42 60 96

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

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If a and b vary inversely to each other, then find the values of p, q, r ; x, y, z and l, m, n. a 6 8 q 25 b 18 p 39 r

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

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