6. Kelly buys a magazine for $30 after it was marked up 20%. What is the original price of the magazine?

7. A parrot is sold for 40% off the original price. If the sale price of the
parrot was $54, what was its original price?

8. There is a markup of 40% on the original price of a fan. If the fan was
sold for $28, what was its original price?

9. Jack had a 10%-off coupon and paid $45 for pair of jeans. What was the
original price of the pair of jeans?

10. What is the principal, if a person paid an amount of $1325 after 1 year at
6% rate of interest per annum?