Holly invests £500 for 4 years in a bank account. The account pays simple interest at a rate of 1.5% per year.
Work out the total amount of interest Holly has got at the end of 4 years.

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn. if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.