Advertisements
Advertisements
प्रश्न
Approximately 97.3% of the water on the earth is not fit for drinking. Find:
(i) the percentage of water on the earth that is fit for drinking.
(ii) The total volume of water available in certain parts of the earth where there are 21,600 m3 of drinking water.
उत्तर
Approximately water on earth which is not fit for drinking = 97.3%
(i) Water fit for drinking = 100 – 97.3 = 2.7%
(ii) At a certain place, the water which is fit for drinking = 21600 m3
The volume of the total water on that place
= `21600xx100/2.7"m"^3`
= `(21600xx100xx10)/27`
= 800 × 1000
= 8,00,000 m3
APPEARS IN
संबंधित प्रश्न
A cricketer scored a total of 62 runs in 96 balls. He hit 3 sixes, 8 fours, 2 twos and 8 singles. What percentage of the total runs came in
(i) Sixes
(ii) fours
(iii) twos
(iv) singles
A bag contains 8 red balls, 11 blue balls and 6 green balls. Find the percentage of blue balls in the bag.
Find the value of the following:
7.5 % of 500 kg.
70% of our body weight is made up of water. Find the weight of water in the body of a person whose body weight is 56 kg.
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.)
| Cream of Tomato | |
| Nutrition Facts | |
| Serving Size 1 cup (240ml) | |
| About 2 serving per Container | |
| Amount Per Serving | |
| Calories 100 | Calories from Fat 20 |
| % Daily Value* | |
| Total Fat 2g | 3% |
| Saturated Fat-1.5g | 6% |
| Cholesterol 10mg | 3% |
| Sodium 690mg | 29% |
| Total Carbohydrate 17g | 6% |
| Dietary Fibre 4 gram | 18% |
| Sugar 11g | |
| Protein 2g | |
| Vitamin A 20% | Vitamin C 20% |
| Calcium 0% | Iron 8% |
| *Per cent Daily Values are based on a 2,000 calorie diet. | |
One serving of cream of tomato soup contains 29% of the recommended daily value of sodium for a 2000 calorie diet. What is the recommended daily value of sodium in milligrams? Express the answer upto 2 decimal places.
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.
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?
25 ml is ______ percent of 5 litres.
Find the value of x if 32% of x kg is 400 kg.
A man travelled 60 km by car and 240 km by train. Find what percent of total journey did he travel by car and what percent by train?
The king cobra can reach a length of 558 cm. This is only about 60 per cent of the length of the largest reticulated python. Find the length of the largest reticulated python.
