Advertisements
Advertisements
Question
Find the number that is 30% less than 70
Advertisements
Solution
Decrease = 30%
Decreased number = `70xx(100-30)/100`
= `(70xx70)/100`
= 49
APPEARS IN
RELATED QUESTIONS
Two numbers are respectively 20 percent and 50 percent of a third number. What percent is the second of the first?
The price of sugar is increased by 20%. By what percent must the consumption of sugar be decreased so that the expenditure on sugar may remain the same?
A class contains 25 children, of which 6 are girls. What percentage of the class are the boys?
The salary of Mr. Sahni is ₹ 8,400 per month, which is now decreased by 8%. Find his new salary per month.
Find the percentage change from the first quantity to the second:
₹ 80, ₹ 120
Air is an important inexhaustible natural resource. It is essential for the survival of human beings, microbes, plants, and animals. The following table shows the percentage of various gases in the air.
| Contents of air | Percentage (by volume) |
| Nitrogen | 78 |
| Oxygen | 21 |
| Other (carbon dioxide, inert gases, water vapours, etc.) | 1 |
In 800 m3 of air, calculate the approximate quantities of nitrogen, oxygen, and other gases.
Rewrite the underlined part using percentage language.
Aparna scored 7.5 points out of 10 in a competition
12% of 250 litre is the same as ________ of 150 litre
In Delhi University, in the year 2009 – 10,49,000 seats were available for admission to various courses at graduation level. Out of these 28,200 seats were for the students of General Category while 7,400 seats were reserved for SC and 3,700 seats for ST. Find the percentage of seats available for students of SC Category and ST Category taken together.
In an examination, there are three papers each of 100 marks. A candidate obtained 53 marks in the first and 75 marks in the second paper. How many marks must the candidate obtain in the third paper to get an overall of 70 per cent marks?
