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.
Advertisements
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
Express the following as decimal fractions:
32%
The value of a machine depreciates every year by 5%. If the present value of the machine be Rs 100000, what will be its value after 2 years?
A number decreased by 23 % becomes 539. Find the number.
A tank can hold 50 litres of water. At present, it is only 30% full. How many litres of water shall I put into the tank so that it becomes 50% full?
Rohit’s age is 12 years and Geeta’s age is 15 years. Express Geeta’s age as a percent of Rohit’s age.
A class has 30 boys and 20 girls. Find the percentage of girls in the class.
Out of his monthly income of ₹ 2,500; a man spends ₹ 1,750. What percent of his income does he save every month?
A number when increased by 18% gives 236. Find the number
When Mathi was buying her flat she had to put down a deposit of `1/10` of the value of the flat. What percentage was this?
Sita is practicing basket ball. She has managed to score 32 baskets in 35 attempts. What is her success rate in per centage?
