Question

John had 7 red marble and 5 blue marble in a box. Today, he put some marble in the box and the ratio is 10 red to 19 total. How many blue marbles does he put today in the box?

Answer 1

Answer:10 - 19 =9 answer 9 blue marbles

Explanation:

Answer 2

He added 14 blue marbles to the box today