Jharne De and Ranjana Kumar Solutions for Chapter: Commercial Mathematics, Exercise 6: EXERCISE 8.4

A bookseller supplied $200$ books to a school and earned a profit of $15\%$. If each book costs him $₹180,$ then find his selling price and profit.

The selling price of $20$ pens is equal to the cost price of $22$ pens. What is the profit percent?

Seema purchased a car for $₹2,25,400$ and spent $₹10,000$ on its repair. Then she sold it for $₹2,25,000$. Find her profit or loss per cent.

Somnath bought bananas at $₹35$ a dozen. He then sold them at $20\%$ profit. Find the selling price one banana.

A man sold two toasters for $₹900$ each. On one toaster he gains $20\%$profit and on the other he loses $20\%$.how much does he gain or lose on the whole transaction? Find the profit or loss percent on the whole transaction.

A shopkeeper purchased $15$ chairs for $₹450$ each. He sold $12$ of them at $₹512$ each and $3$ of them at $₹427$ each find his gain or loss percent.

A vegetable vender bought $25 \mathrm{kg}$of potatos at $₹7$per $\mathrm{kg}$ and $15$ $\mathrm{kg}$at $₹8$ per $\mathrm{kg}.$ If the rate at which he sell them to gain $22\%$ is $₹k$ per $\mathrm{kg}$, find $k$.

A fruit seller bought $2$ dozen oranges at $₹45$ per dozen. Thirteen oranges were found to be rotten. If the rate rate at which he should sell each orange to gain $10\%$ is $₹k$, find $k$.