Ajit caculates his profit percentage on the selling price whereas Rohit calculates his on the cost price. They find that the difference of their profits is $Rs.\, 100.$ If the selling price of both of them are the same and both of them get $25\%$ profit, find their selling price? (in $Rs.$)

If a radio is purchased for $Rs.\, 490$ and sold for $Rs.$ $465.50 .$ Find the $\operatorname{loss} \% ?$

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 trader marks his goods $40 \%$ above the cost price and allows a discount of $25 \% .$ The profit he makes, is in $\%$

While selling a watch, a shopkeeper gives a discount of $15 \% .$ If he gives a discount of $20 \%,$ he earns $Rs.\, 51$ less as profit. What is the original price of the watch? (in $Rs$)

An electric pump was sold at a profit of $15 \% .$ Had it been sold.for $Rs.\, 600$ , the profit would have been $20 \% .$ The former selling price is in $Rs.?$