Each marble bag sold by lisa's marble company contains 3 purple marbles for every 2 green marbles. if a bag has 18 green marbles, how many purple marbles does it contain

18 green marble X 3 purple marble = 46

46 purple marble

27 I think because the ratio 18:27 simplifies to 2:3 right?

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)