Albert buys $4$ $horses$ and $9$ cows for $Rs. 13400$. If he sells the horse at $10 \%$ profit and the cows at $20 \%$ profit, then he earns a total profit of $Rs.\, 1880 .$ The cost of a horse is (in $Rs.$)
$1000$
$2000$
$2500$
$3000$
Nisha bought a number of oranges at $2$ for a rupee and an equal number at $3$ for a rupee. To make a profit of $20 \%$ she should sell a dozen for (in $Rs.$)
A rice trader buys $8$ quintals of rice for $Rs.\, 3,600,10 \%$ rice is lost in transportation. At what rate should he sell to earn $15 \%$ profit in $Rs.$ per quintal ?
If the cost price of $21$ watches is equal to the selling price of $18$ pieces, then what would be the gain percent in this transaction?
A dishonest dealer defrauds to the extent of $x \%$ in buying as well as selling his goods by using faulty weight. What will be the gain per cent on his outlay?
A fruit-seller buys $x$ guavas for $Rs.\, y$ and sells $y$ guavas for $Rs.\, x .$ If $x>y,$ then he made