For the following questions answer them individually
Which smallest number to be subtracted from 300, so that the resulting number is completely divisible by 9?
A number when divided by 18 leaves remainder 15. What is the remainder when the same number is divided by 6?
P can do a piece of work in 36 days. If Q is 50% more efficient than P, then in how many days can Q do the same work?
P is twice as good as Q and together they finish a piece of work in 36 days. The number of days taken by P alone to finish the work?
If the diagonal of a square is 10 cm, then what is the area $$(in cm^2)$$ of the square?
The marked price of an article is Rs 750 and a customer pays Rs 600 for it. What is the discount percentage?