A fruit-seller buys some oranges and by selling $40 \%$ of them he fealises the cost price of all the oranges. As the oranges being to grow over-ripe, he reduces the price and sells $80 \%$ of the remaining oranges at half the previous rate of profit. The rest of the oranges being rotten are thrown away. The overall percentage of profit is
$80$
$84$
$94$
$96$
The ratio between selling price and cost price of an article is $7: 5 .$ What is the ratio between the profit and the cost price of that article?
A men gains $20 \%$ by selling an article for a certain price. If he sells it at double the price, what will be the percentage of profit?
Three successive discounts of $10 \%, 12 \%$ and $15 \%$ will amount to a single discount of in $\%$?
Hemant purchased $120$ rims of paper at $Rs.\,80$ per rim. He spent $Rs.\,280$ on transportation, paid octroi at the rate of $40$ paise per rim and paid $Rs.\,72$ to the coolie. If he wants to have a gain of $8 \%,$ the selling price per rim must be (in $Rs.$)
Find $CP$ when $SP = Rs.\, 51 .70, \operatorname{loss}=12 \% ?$