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24.58 = 2 × 10 + 4 × 1 + 5 × 10 + 8 × 100
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Radhika bought a car for Rs 2,50,000. Next year its price decreased by 10% and further next year it decreased by 12%. In the two years overall decrease per cent in the price of the car is ______.
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Increase of a number from 150 to 162 is equal to increase of ______ per cent.
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15% increase in price of an article, which is Rs 1,620, is the increase of Rs ______.
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2500 is greater than 500 by ______ %.
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Four times a number is a ______ % increase in the number.
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Three times a number is 200% increase in the number, then one-third of the same number is 200% decrease in the number.
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Number of students appearing for class X CBSE examination increases from 91,422 in 1999 – 2000 to 11,6054 in 2008 – 09. Increase in the number of students appeared is approximately 27%.
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In 2007 – 08, the number of students appeared for Class X examination was 1,05,332 and in 2008 – 09, the number was 1,16,054. If 88,151 students pass the examination in 2007 – 08 and 103804 students in 2008 – 09. What is the increase or decrease in pass % in Class X result?
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In 1975, the consumption of water for human use was about 3850 cu.km/year. It increased to about 6000 cu.km/year in the year 2000. Find the per cent increase in the consumption of water from 1975 to 2000. Also, find the annual per cent increase in consumption (assuming water consumption increases uniformly).
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If the price of petrol, diesel and LPG is slashed as follows:
| Fuel | Old prices/ litre (in Rs) |
New price/ litre (in Rs) |
% Decrease |
| Petrol / L | 45.62 | 40.62 | ______ |
| Diesel / L | 32.86 | 30.86 | ______ |
| LPG/14.2kg | 304.70 | 279.70 | ______ |
Complete the above table.
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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 won in 2004 |
Number of seats won in 2009 |
| A | 206 | 145 |
| B | 116 | 138 |
| C | 4 | 24 |
| D | 11 | 12 |
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The food labels given below give information about 2 types of soup: cream of tomato and sweet corn. Use these labels to answer the given questions. (All the servings are based on a 2000 calorie diet.)
| Sweet Corn | Cream of Tomato | ||
| Nutrition Facts | Nutrition Facts | ||
| Serving Size 1 cup (240ml) | Serving Size 1 cup (240ml) | ||
| About 2 serving per Container | About 2 serving per Container | ||
| Amount Per Serving | Amount Per Serving | ||
| Calories 90 | Calories from Fat 9 | Calories 100 | Calories from Fat 20 |
| % Daily Value* | % Daily Value* | ||
| Total Fat 2g | 2% | Total Fat 2g | 3% |
| Saturated Fat-0g | 0% | Saturated Fat-1.5g | 6% |
| Cholesterol 0mg | 0% | Cholesterol 10mg | 3% |
| Sodium 540mg | 22% | Sodium 690mg | 29% |
| Total Carbohydrate 17g | 6% | Total Carbohydrate 17g | 6% |
| Dietary Fibre 3 gram | 14% | Dietary Fibre 4 gram | 18% |
| Sugar 5g | Sugar 11g | ||
| Protein 3g | Protein 2g | ||
| Vitamin A 30% | Vitamin C 10% | Vitamin A 20% | Vitamin C 20% |
| Calcium 2% | Iron 6% | Calcium 0% | Iron 8% |
| *Per cent Daily Values are based on a 2,000 calorie diet. |
*Per cent Daily Values are based on a 2,000 calorie diet. |
||
Find the increase per cent of sugar consumed if cream of tomato soup is chosen over sweet corn soup.
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For an amount, explain why, a 20% increase followed by a 20% decrease is less than the original amount.
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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.
Suppose a sunscreen allows 25% of the sun’s UV rays.
- What fraction of UV rays does this sunscreen block? Give your answer in lowest terms.
- Use your answer from Part (a) to calculate this sunscreen’s SPF. Explain how you found your answer.
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If the diagonal d of a quadrilateral is doubled and the heights h1 and h2 falling on d are halved, then the area of quadrilateral is ______.
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Data was collected on a student’s typing rate and graph was drawn as shown below. Approximately how many words had this student typed in 30 seconds?
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The horizontal and vertical line in a line graph are usually called ______ and ______.
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The cost of a note book is Rs 10. Draw a graph after making a table showing cost of 2, 3, 4, .... note books. Use it to find
- the cost of 7 notebooks.
- the number of note books that can be purchased with Rs 50.
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The cost of a notebook is Rs 10. Draw a graph after making a table showing cost of 2, 3, 4, .... notebooks. Use it to find the number of note books that can be purchased with Rs 50
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