If an item is sold for $Rs.\, 924$ then there is a profit of $10 \%$ then what is the cost price in $\%$?
$840$
$860$
$880$
$900$
Sonal buys mangoes at the rate of $3 \,kgs$ for $Rs$. $21$ and sells them at $5$ $kgs$ for $Rs.$ $50 .$ To earn a profit of $Rs.\,102,$ he must sell how many mangoes in $kgs$?
On selling an article for $Rs.\, 170,$ a shopkeeper loses $15 \% .$ In order to gain $20 \%,$ he must sell that article at rupees
Successive discounts of $10 \%, 20 \%$ and $50 \%$ will be equivalent to a single discount of..........$\%$
In these questions, two equations mabered $I$ and $II$ are given. You have to solve both the equations and mark the appropriate option..
$I$. $6 x^{2}+19 x+15=0$
$II$.$3 y^{2}+11 y+10=0$
Ravipurchases $90$ pens and sells $40$ pens at a gain of $10 \%$ and $50$ pens at a gain of $20 \% .$ Had he sold all of them at a uniform profit of $15 \%$ he would have got $Rs.\, 40$ less. Find the cost price of each pen in $Rs.$