The total number of marbles is 70 and there are 6 times as many blue marbles as yellow marbles. how many red marbles are in the bag?

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

George has seven boxes of five pencils. giulio three boxes of eight pencils. one of the boys arranges all his pencils equally into two groups. was this george or giulio how many are in each group explain