Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Seventh grader Laila Washington: “You get to learn a lot” at Math Counts. Credit: Maya McFadden ...

ST. CROIX — If a group of middle-schoolers solved 30 problems in 40 minutes, eight problems in 24 minutes and 10 problems in 20 minutes, what is the average number of problems solved per hour? Word ...