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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?
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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?

User Alex Vergara
by
8.6k points

2 Answers

3 votes

Answer:10 - 19 =9 answer 9 blue marbles

Explanation:

User Gaurang S
by
8.5k points
3 votes

Answer:

He added 14 blue marbles to the box today

User Jasti
by
8.4k points
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