There are 40 students in a classroom, 9/20 of students are boys and 4/5 of students are right-handed. What is the minimum number of right-handed boys possible?
30, 40 and 'n' are such that every number is a factor of the product of the other two numbers. If 'n' is a positive integer, what is the difference between the maximum and minimum value of 'n' ?
Of the 300 employees in company X, 3/5 are females. If 100 female employees are hired and no other changes are made, what percent of the employees will be females?