Zack had some blue marbles and 36 green marbles in the ratio 3:2. After he gave away some blue marbles, the ratio of the number of blue marbles
to the number of green marbles became 2 : 3. How many blue marbles did
he give away?​

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

Solve this problem! extra ! 3025/5.5 = a/90.75 / = fraction

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.