There are 20 red marbles and 30 blue marbles in a bag. What is the probability of drawing a red marble?
If the sale price of an item is $60 after a 30% discount, what was its original price?
If the sale price of an item is $60 after a 30% discount, what was its original price?
A right-angled triangle has legs of length 5 cm and 12 cm. What is the length of the hypotenuse?
A right-angled triangle has legs of length 5 cm and 12 cm. What is the length of the hypotenuse?
The average of five numbers is 15. If one number is 10, what is the average of the remaining four numbers?
The average of five numbers is 15. If one number is 10, what is the average of the remaining four numbers?
The area of a rectangle is 36 square meters and its length is 9 meters. What is its width?
The area of a rectangle is 36 square meters and its length is 9 meters. What is its width?