Questions by Arun

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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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A watch worth Rs 5400 is offered for sale at Rs 4,500. What per cent discount is offered during the

asked Jan 17, 2022 in 8th-maths

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A shopkeeper was selling all his items at 25% discount. During the off season, he offered 30% discount over and above the existing discount. If Pragya bought a skirt which was marked for Rs 1,200, how much did she pay for

asked Jan 17, 2022 in 8th-maths

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Find the difference between Compound Interest and Simple Interest on Rs 45,000 at 12% per annum for 5

asked Jan 17, 2022 in 8th-maths

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What is the percentage increase or decrease in the number of seats won by A, B, C and D in the general elections of 2009 as compared to the results of 2004? Political party Number of seats wonin 2004 Number of seats wonin 2009 ABCD 206116411 1451382412

asked Jan 17, 2022 in 8th-maths

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How much more per cent seats were won by X as compared to Y in Assembly Election in the state based on the data given below. Party Won(out of 294) XYZW 1581051813

asked Jan 17, 2022 in 8th-maths

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Achal bought a second-hand car for Rs 2,25,000 and spend Rs 25,000 for repairing. If he sold it for Rs 3,25,000, what is his profit per

asked Jan 17, 2022 in 8th-maths

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Rahim borrowed Rs 10,24,000 from a bank for one year. If the bank charges interest of 5% per annum, compounded half-yearly, what amount will he have to pay after the given time period. Also, find the interest paid by

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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Music CD originally priced at Rs 120 is on sale for 25% off. What is the S.P.? Sonia and Rahul have different ways of calculating the sale price for the items they bought. As you work on the next problem, try both of these methods to see which you

asked Jan 17, 2022 in 8th-maths

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Sunscreens block harmful ultraviolet (UV) rays produced by the sun. Each sunscreen has a Sun Protection Factor (SPF) that tells you how many minutes you can stay in the sun before you receive one minute of burning UV rays. For example, if you apply sunscreen with SPF 15, you get 1 minute of UV rays for every 15 minutes you stay in the sun. 1. A sunscreen with SPF 15 allows only `1/15` of the sun’s UV rays. What per cent of UV rays does the sunscreen abort? 2. Suppose a sunscreen allows 25% of the sun’s UV rays. a.

asked Jan 17, 2022 in 8th-maths

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With the decrease in prices of tea by 15% Tonu, the chaiwallah, was able to buy 2 kg more of tea with the same Rs 45 that he spent each month on buying tea leaves for his chai shop. What was the reduced price of tea? What was the original price of tea?

asked Jan 17, 2022 in 8th-maths

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Below is the Report Card of Vidit Atrey. Vidit’s teacher left the last column blank. Vidit is not able to make out, in which subject he performed better and in which he needs improvement. Complete the table to help Vidit know his comparative performance.

asked Jan 17, 2022 in 8th-maths

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Sita is practicing basket ball. She has managed to score 32 baskets in 35 attempts. What is her success rate in per centage?

asked Jan 17, 2022 in 8th-maths

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The table shows the cost of sunscreen of two brands with and without sales tax. Which brand has a greater sales tax rate? Give the sales tax rate of each brand. Cost (in Rs) Cost+Tax (in Rs) 1. X (100 gm) 2. Y (100 gm) 7062 7565

asked Jan 17, 2022 in 8th-maths

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A car covers a distance in 40 minutes with an average speed of 60 km per hour. The average speed to cover the same distance in 30 minutes

asked Jan 17, 2022 in 8th-maths

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Which of the following is in direct

asked Jan 17, 2022 in 8th-maths

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If 5 persons can finish a job in 10 days then one person will finish it in 2

asked Jan 17, 2022 in 8th-maths

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If two quantities p and q vary inversely with each other,

asked Jan 17, 2022 in 8th-maths

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Both x and y are said to vary ______ with each other if for some positive number k, xy =

asked Jan 17, 2022 in 8th-maths

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