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A bowler throws a cricket ball at a speed of 120 km/h. How long does this ball take to travel a distance of 20 metres to reach the

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

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Here is a key board of a harmonium: (a) Find the ratio of white keys to black keys on the keyboard. (b) What is the ratio of black keys to all keys on the given keyboard. (c) This pattern of keys is repeated on larger keyboard. How many black keys would you expect to find on a keyboard with 14 such

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

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The following table shows the distance travelled by one of the new eco-friendly energy-efficient cars travelled on gas. Litres of gas 1 0.5 2 2.5 3 5 Distance (km) 15 7.5 30 37.5 45 75 Which type of properties are indicated by the table? How much distance will be covered by the car in 8 litres of

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

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Kritika is following this recipe for bread. She realises her sister used most of sugar syrup for her breakfast. Kritika has only `1/6` cup of syrup, so she decides to make a small size of bread. How much of each ingredient shall she use? Bread recipe 1 cup quick cooking oats 2 cups bread flour `1/3` cup sugar syrup 1 tablespoon cooking oil `1 1/3` cups water 3 tablespoons yeast 1 teaspoon

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

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Many schools have a recommended students-teacher ratio as 35:1. Next year, school expects an increase in enrolment by 280 students. How many new teachers will they have to appoint to maintain the students-teacher

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

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Kusum always forgets how to convert miles to kilometres and back again. However she remembers that her car’s speedometer shows both miles and kilometres. She knows that travelling 50 miles per hour is same as travelling 80 kilometres per hour. To cover a distance of 200 km, how many miles Kusum would have to

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

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The students of Anju’s class sold posters to raise money. Anju wanted to create a ratio for finding the amount of money her class would make for different numbers of posters sold. She knew they could raise Rs 250 for every 60 posters sold. (a) How much money would Anju’s class make for selling 102 posters? (b) Could Anju’s class raise exactly Rs 2,000? If so, how many posters would they need to sell? If not,

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

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Find the area of a rhombus whose one side measures 5 cm and one diagonal as 8

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

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The parallel sides of a trapezium are 40 cm and 20 cm. If its non-parallel sides are both equal, each being 26 cm, find the area of the

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

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Find the area of polygon ABCDEF, if AD = 18cm, AQ = 14 cm, AP = 12 cm, AN = 8 cm, AM = 4 cm, and FM, EP, QC and BN are perpendiculars to diagonal

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

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The circumference of the front wheel of a cart is 3 m long and that of the back wheel is 4 m long. What is the distance travelled by the cart, when the front wheel makes five more revolutions than the rear

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

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Four horses are tethered with equal ropes at 4 corners of a square field of side 70 metres so that they just can reach one another. Find the area left ungrazed by the

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

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The walls and ceiling of a room are to be plastered. The length, breadth and height of the room are 4.5 m, 3 m, and 350 cm respectively. Find the cost of plastering at the rate of Rs 8 per

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

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Most of the sailboats have two sails, the jib and the mainsail. Assume that the sails are triangles. Find the total area of each sail of the sail boats to the nearest tenth.

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

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The area of a trapezium with equal non-parallel sides is 168 `m^2`. If the lengths of the parallel sides are 36 m and 20 m, find the length of the non-parallel

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

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Mukesh walks around a circular track of radius 14 m with a speed of 4 km/hr. If he takes 20 rounds of the track, for how long does he

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

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The areas of two circles are in the ratio 49:64. Find the ratio of their

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

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