One common factor of two numbers is 40. another common factor is 10. if both numbers are less than 100, what are the two numbers?

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?