NCERT Class 8

84. 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 [...]

83. 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 last? 83. In a hostel of 50 girls how long will these provisions last? there are food provisions for 40 days. If 30 more girls join the hostel August [...]

82. 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 cm? 82. At a particular time the length of the shadow of Qutub Minar [...]

81. The cost of 27 kg of iron is Rs 1,080, what will be the cost of 120 kg of iron of the same quality? 080 81. The cost of 27 kg of iron is Rs 1 what will be the cost of 120 kg of iron of the same quality? August 5, 2021 Category: [...]

80. 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 hours? 80. A swimming pool can be filled in 4 hours by 8 pumps of the same type. How many such pumps [...]

79. 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 810? 79. If 25 metres of cloth costs Rs 337.50 then (i) What will be the cost of [...]

78. If a and b vary inversely to each other, then find the values of p, q, r ; x, y, z and l, m, n. -q 78. If a and b vary inversely to each other m n r ; x then find the values of p y z and l August 5, 2021 [...]

77. From the following table, determine if x and y are in direct proportion or not. 77. From the following table determine if x and y are in direct proportion or not. August 5, 2021 Category: Chapter 13 - Direct and Inverse Proportions , Maths , NCERT Class 8 ,

76. 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 car? 76. A car travels a distance of 225 km in 25 litres of petrol. How many litres of petrol will be required to [...]

75. If Naresh walks 250 steps to cover a distance of 200 metres, find the distance travelled in 350 steps. 75. If Naresh walks 250 steps to cover a distance of 200 metres find the distance travelled in 350 steps. August 5, 2021 Category: Chapter 13 - Direct and Inverse Proportions , Maths , NCERT [...]