When x is subtracted from each of 21, 22, 60, and 64, the numbers so obtained in this order are in proportion. What is the mean proportional between (x + 4) and \(\left(\dfrac{x}{2} - 1\right)?\)
The marked price of an article is Rs. 5,450. If a person earns a profit of 15% after allowing a discount of 15%, then the cost price (in Rs) (correct to the nearest integer) of the article is:
Study the following graph that shows the number of boys and girls who appeared for the Class X examination in a school XYZ, in different years.
What is the ratio of the total number of girls who appeared in 2012 and 2015 to the total number of boys who appeared for the class X examination in 2012 and 2013?
Study the following graph that shows the number of boys and girls who appeared for the Class X examination in a school XYZ, in different years.
The total number of girls who appeared in 2012, 2013, 2014 and 2015 is what percentage less than the total number of boys who appeared in all the five years? (correct to one decimal place)