Quantitative Aptitude - Arithmetic Ability Questions

I gain 19% if I sell an article for Rs. 595. What would be my gain or loss percentage if I sell it for Rs. 475?

A shopkeeper allows 25% discount on the marked price of an article and he suffered a loss of 15%. What will be the profit percent if the article is sold at marked price?

$$\begin{gathered} 3x2-14x+16=0 \\ 5y2-16y+12=0 \end{gathered}$$

Findout the odd word/letters/number/number pair from the given alternatives.
23 : 8 : : 62 : ?

When a discount of 20% is given on a pizza, the profit is 32%. If the discount is 18%, then the profit is

If 6 years are subtracted from the present age of Ayush and takes 25% of that then we get the present age of his only son. 4 years ago, his daughter’s age is 7 years more than his son. Sum of daughter’s present age and his wife’s present age is 10 years more than Ayush’s present age then find the present age of Ayush if average of present age of entire family is 30.25 yr? 

If 3x - 4 > 2 - x/3 and 3x + 5 > 4x - 5; then find the value of x?

The average of four consecutive odd numbers is 40. What is the largest number?