What is the chance of rolling a 9 using a pair number cube?

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.