The cost price of $12$ tables is equal to the selling price of $16$ tables. The loss percent is
$15$
$20$
$25$
$30$
A man bought nine pens for a rupee. How many pens should be sell for a rupee to gain $50 \% ?$
A shopkeeper allows a discount of $10 \%$ on the marked price of an item but charges a sales tax of $8 \%$ on the discounted price. If the customer pays $Rs.\, 3,402$ as the price including the sales tax, then the marked price is (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 $Rs.?$
If the ratio of the cost price and selling price of an article is $20: 21,$ then what will be the profit percent?
In these questions, two equations mabered $I$ and $II$ are given. You have to solve both the equations and mark the appropriate option..
$I$. $6 x^{2}+19 x+15=0$
$II$.$3 y^{2}+11 y+10=0$