For the following questions answer them individually
The average of $$D_{1}$$ and $$D_{2}$$ is 40. The average of $$D_{2}$$ and $$D_{3}$$ is 45. The average of $$D_{1}$$ and $$D_{3}$$ is 55. What is the value of $$D_{3}$$ ?
A square of side p is taken. A rectangle is cut out from this square such that the length of one side of the rectangle is equal to half of the length of one side of the square and the length of another side of the rectangle is equal to $$\frac{1}{3}$$ of the length of the first side of the rectangle. What is the area of the po11io11 of the square that remained after the rectangle is cut out?
What is the single discount that is equivalent to two successive discounts of 12.5% and 20%?
The selling price of a book is ₹855. If the loss incurred through the sale is 10%, then what is the nominal amount of loss incurred?
In what time does a sum of money amount to twice of itself at the simple interest of 25% per annum?
Mayank spend 35% of his monthly income on household items, 25% on electronic items, and 7% on medicines. He saves the remaining amount of ₹11,550. What is Mayank's monthly income (in ₹)?
In a class of 1500 students, the percentage of girls is 30%. If 80% of the boys failed the examination, find t he number of boys who passed in the examination.
Study the given bar-graph and answer the question that follows.
The bar-graph shows the population of six countries (in millions) in 20 IO and 2020.
In the USA, by what approximate percentage did the population increase by 2020 over its population in 2010?