Question
A bag had some blue crayons and brown crayons in the ratio of 7 : 2. Julie removed 30 blue crayons and put another 10 brown crayons into the bag. There is now 25% as many blue crayons as brown crayons in the bag. How many blue crayons were in the bag at first?
4 m

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A bag had some blue crayons and brown crayons in the ratio of 7 : 2. Julie removed 30 blue crayons and put another 10 brown crayons into the bag. There is now 25% as many blue crayons as brown crayons in the bag. How many blue crayons were in the bag at first?