A boat takes 30 minutes to travel 15 miles upstream and 25 minutes to travel the same 15 miles downstream. Assuming that the boat’s engine is set at the same power setting and the speed of
the current remains constant for both trips, what’s the boat’s speed in miles per minute at that
power setting in still water. You may express your answer in a simple fraction.

Hundred and tens tables to make 430 in five different ways

Solve the problem by using a venn diagram a group of students were surveyed about their taste in music.they were asked how they like three types of music: rock, country western and jazz.the results are summarized below: no one dislikes all three types of music.six like all three types of music.eleven don’t like country western.sixteen like jazz.three like country western and jazz, but not rock.six don’t like rock.eight like rock and country western.seven don’t like jazz.how many students were surveyed?

Def rotates 90 clockwise about point a to create d’ e’ f’. therefore, which equation must be true ?