A bag contains 30 red marbles and 15 purple marbles. Mr. Clark wants to add 270 marbles to the bag. He wants the ratio of red to purple marbles to remain the same. How many of each should he add?

Question

A bag contains 30 red marbles and 15 purple marbles. Mr. Clark wants to add 270 marbles to the bag. He wants the ratio of red to purple marbles to remain the same. How many of each should he add?

Responses

70 red marbles 200 purple marbles

200 red marbles and 70 purple marbles

180 purple marbles and 90 red marbles

180 red marbles and 90 purple marbles

Answer 1

200 red marbles and 70 purple marbles

Answer 2

A bag contains 30 red marbles and 15 purple marbles. Mr. Clark wants to add 270 marbles to the bag. He wants the ratio of red to purple marbles to remain the same. How many of each should he add?

200 red marbles and 70 purple marbles

To maintain the same ratio of red to purple marbles, Mr. Clark should add 180 red marbles and 90 purple marbles.