Recent questions tagged chapter13

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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 3 6 15 20 30 y 12 24 45 60 120

asked Jan 17, 2022 in 8th-maths by Arun (1.7k 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 krutika (1.7k 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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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 Arun (1.7k 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 2 y 6 10 b x 12.5 15 z

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 l 9 n 6 b 5 m 25 10

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

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If 25 metres of cloth costs Rs 337.50, then (i) What will be the cost of 40 metres of the same type of cloth? (ii) What will be the length of the cloth bought for Rs

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

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A swimming pool can be filled in 4 hours by 8 pumps of the same type. How many such pumps are required if the pool is to be filled in `2 2/3`

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

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The cost of 27 kg of iron is Rs 1,080, what will be the cost of 120 kg of iron of the same

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

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At a particular time, the length of the shadow of Qutub Minar whose height is 72 m is 80 m. What will be the height of an electric pole, the length of whose shadow at the same time is 1000

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

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In a hostel of 50 girls, there are food provisions for 40 days. If 30 more girls join the hostel, how long will these provisions

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

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Campus and Welfare Committee of school is planning to develop a blue shade for painting the entire school building. For this purpose various shades are tried by mixing containers of blue paint and white paint. In each of the following mixtures, decide which is a lighter shade of blue and also find the lightest blue shade among all of them. If one container has one litre paint and the building requires 105 litres for painting, how many container of each type is required to paint the building by darkest blue

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

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Posing a question Work with a partner to write at least five ratio statements about this quilt, which has white, blue, and purple squares. How many squares of each colour will be there in 12 such

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

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A packet of sweets was distributed among 10 children and each of them received 4 sweets. If it is distributed among 8 children, how many sweets will each child

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

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44 cows can graze a field in 9 days. How many less/more cows will graze the same field in 12

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k 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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Shabnam takes 20 minutes to reach her school if she goes at a speed of 6 km/h. If she wants to reach school in 24 minutes, what should be her

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

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Ravi starts for his school at 8:20 a.m. on his bicycle. If he travels at a speed of 10km/h, then he reaches his school late by 8 minutes but on travelling at 16 km/h he reaches the school 10 minutes early. At what time does the school

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

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Match each of the entries in Column I with the appropriate entry in Column II Column I Column II 1. x and y vary inversely to each other A. x y = Constant 2. Mathematical representation of inverse B. y will increase in proportion variation of quantities p and q 3. Mathematical representation of C. xy = Constant direct variation of quantities m and n 4. When x = 5, y = 2.5 and when D. p ∝ 1 q y = 5, x = 10

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

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