# CBSE Class 7 - Application of Percentages Videos

- 18 percentage of a number is 108. Find the number
- How to convert a mixed number into percentage
- How to convert a mixed number into percentage
- In how may years will ₹900 yeild an interest of ₹180 at the rate of 5% per annum
- My mother says in her xhildhood petrol was Rs. 2 pwr litre. It is Rs. 77 per litre today. What is the percentage of increase
- If the interest on 3000 rupees is 600 rupees at a certain rate for a certain number of years ,what would the interest be on 1500 rupees under the same condition
- If the fees is increased 15%in a year now fees is 1500 then what is fees of before this year
- Respected sir/ ma'am, How to convert a time period in years which it is given in months or years? Can you please explain with an example of both the cases? Topic: Profit and Loss
- A sum of Rs. 12,500 amounts to Rs. 15,500 in 4 years at the rate of simple interest. What is the rate of interest?
- The salaries A, B, C are in the ratio 2 : 3 : 5. If the increments of 15%, 10% and 20% are allowed respectively in their salaries, then what will be new ratio of their salaries?