Questions by nishit

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By what number should `((-3)/2)^(-3)` be divided so that the quotient may be `(4/27)^(-2)`

asked Jan 17, 2022 in 8th-maths

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An inch is approximately equal to 0.02543 metres. Write this distance in standard

asked Jan 17, 2022 in 8th-maths

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Stretching Machine Suppose you have a stretching machine which could stretch almost anything. For example, if you put a 5 metre stick into a `(xx 4)` stretching machine (as shown below), you get a 20 metre stick. Now if you put 10 cm carrot into a `(xx 4)` machine, how long will it be when it comes out?

asked Jan 17, 2022 in 8th-maths

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Find three repeater machines that will do the same work as a `(xx64)` machine. Draw them, or describe them using

asked Jan 17, 2022 in 8th-maths

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What will the following machine do to a 2 cm long piece of chalk?

asked Jan 17, 2022 in 8th-maths

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By what number should `(–15)^(–1)` be divided so that the quotient may be equal to

asked Jan 17, 2022 in 8th-maths

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Simplify: `((3^-2)^2 xx (5^2)-3 xx (t^(-3))^2)/((3^(-2))^5 xx (5^3)^(-2) xx

asked Jan 17, 2022 in 8th-maths

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Find the compound interest on Rs 48,000 for one year at 8% per annum when compounded half

asked Jan 17, 2022 in 8th-maths

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A bought a tape recorder for Rs 8,000 and sold it to B. B in turn sold it to C, each earning a profit of 20%. Which of the following is

asked Jan 17, 2022 in 8th-maths

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_________ expenses are the additional expenses incurred by a buyer for an item over and above its cost of

asked Jan 17, 2022 in 8th-maths

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To calculate the growth of a bacteria if the rate of growth is known, the formula for calculation of amount in compound interest can be

asked Jan 17, 2022 in 8th-maths

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Simple interest on a given amount is always less than or equal to the compound interest on the same amount for the same time period and at the same rate of interest per

asked Jan 17, 2022 in 8th-maths

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The cost of a sewing machine is Rs 7,000. Its value depreciates at 8% p.a. Then the value of the machine after 2 years is Rs

asked Jan 17, 2022 in 8th-maths

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The original price of a shampoo bottle bought for Rs 324 if 8% VAT is included in the price is Rs

asked Jan 17, 2022 in 8th-maths

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The marked price of an article is Rs 500. The shopkeeper gives a discount of 5% and still makes a profit of 25%. Find the cost price of the

asked Jan 17, 2022 in 8th-maths

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If principal = Rs 1,00,000. rate of interest = 10% compounded half yearly. Find Amount after one

asked Jan 17, 2022 in 8th-maths

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A new computer costs Rs 1,00,000. The depreciation of computers is very high as new models with better technological advantages are coming into the market. The depreciation is as high as 50% every year. How much will the cost of computer be after two

asked Jan 17, 2022 in 8th-maths

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Brinda purchased 18 coats at the rate of Rs 1,500 each and sold them at a profit of 6%. If customer is to pay sales tax at the rate of 4%, how much will one coat cost to the customer and what will be the total profit earned by Brinda after selling all

asked Jan 17, 2022 in 8th-maths

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The following items are purchased from showroom: T-Shirt worth Rs 1200. Jeans worth Rs 1000. 2 Skirts worth Rs 1350 each. What will these items cost to Shikha if the sales tax is

asked Jan 17, 2022 in 8th-maths

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In a scout camp, there is food provision for 300 cadets for 42 days. If 50 more persons join the camp, for how many days will the provision

asked Jan 17, 2022 in 8th-maths

Questions by nishit

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