On selling $17$ balls at $Rs.\, 720$, there is a loss equal to the cost price of 5 balls. The cost price of a ball is (in $Rs.$)
$45$
$50$
$55$
$60$
A pen was sold for a certain sum and there was a loss of $20 \% .$ Had it been sold for $Rs.\, 12$ more, there would have been a gain of $30 \% .$ What would be the profit if the pen was sold for $Rs.\, 4.80$ more than what it was sold for? (in $\%$)
A shopkeeper purchased $245$ pieces of an article at $Rs$. $30$ per piece. He spent $Rs.$ $980$ on transport and $Rs.$ $1470$ on packing the articles. He sold the articles at the rate of $Rs.$ $50$ per piece. What is the percent profit earned?
A person sells $36$ apple per rupee and suffers a loss of $4 \% .$ Find how many apple per rupees to be sold to have a gain of $8 \%$.
What profit/loss percent did Ravi earn if he purchased an item of $Rs.\,5600$ and sold it at $3/4$ of its cost price?
A shopkeeper sold an article for $Rs.\, 400$ after giving $20 \%$ discount on the labelled price and made $30 \%$ profit on the cost price. What would have been the percentage profit, had he not given the discount?