The profit earned by selling an article for $Rs.\, 900$ is double the loss incurred when the same article is sold for $Rs.$ $450 .$ At what price should the article be sold to make $25 \%$ profit in $Rs.$?
$400$
$500$
$700$
$750$
In these questions, two equations mabered $I$ and $II$ are given. You have to solve both the equations and mark the appropriate option..
$I$. $6 x^{2}+19 x+15=0$
$II$.$3 y^{2}+11 y+10=0$
A vendor bought toffees at $6$ for a rupee. How many for a rupee must he sell to gain $20 \% ?$
A shopkeeper mixes $20\, kg$ of rice which cost him $Rs.\,5$ per $kg$ with $35\,kg$ of rice which cost him $Rs.\,7$ per $kg.$ Then he sells the mixture at $Rs.\,6.5$ per $kg$. Find his total profit and percent profit.
A fruit-seller buys $x$ guavas for $Rs.\, y$ and sells $y$ guavas for $Rs.\, x .$ If $x>y,$ then he made
A shopkeeper allows a discount of $12.5 \%$ on the marked price of a certain article and makes a profit of $20 \% .$ If the article costs the shopkeeper $Rs. 210$, then the marked price of the article will be (in $Rs.$)