Math Problems and Profit Calculations

A book costs $150, and the selling price is $180. What is the profit?

A shirt is sold for $80. If the cost price is $60, calculate the profit percentage.

A toy was purchased for $30 and sold for $40. What is the selling price?

A shopkeeper bought a pair of shoes for $200 and sold them for $250. What is the profit he made?

A pencil costs $5, and the selling price is $8. What is the profit percentage?

A ball is bought for $50 and sold for $40. What is the loss amount?

If a watch is sold for $500 and the cost price is $400, what is the profit percentage?

A shirt was bought for $120 and sold for $150. Find the profit.

A farmer sold a basket of apples for $45. If he bought the apples for $40, what is his profit?

A computer costs $1,000, and it is sold for $1,200. What is the profit percentage?