All Questions are fron percentage and its applications Can any one show with working?

1. We have a basket full of apples oranges and mangoes. 50% are apples, 30% are oranges then what percent are mangoes?

2. Girija saves Rs.3000 every month from her salary. If her saving is 20% of the salary, what is her monthly salary?

3. 9 is 25% of what number

4. Find the rate of I nterest per annum if Rs.500 gives Rs.105 as interest in 6 years.

5. By selling a fan for Rs.1200 karim losos Rs.200. At which price must he sell it to gain 10%?