Mark can dig a ditch in 4 hours. Greg can dig the same ditch in 3 hours. How long would it take them to dig it together?

From three chocolate bars we can make at most five chocolate rabbits and have some leftover. what is the greatest possible number of chocolate rabbits that can be made from sixteen chocolate bars (maybe with some leftover)?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?