Question
There were 495 blue, green and orange balls in a bag. Given that there were 186 more blue balls than orange balls and 57 more green balls than orange balls, how many orange balls were there in the bag?
4 m

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There were 495 blue, green and orange balls in a bag. Given that there were 186 more blue balls than orange balls and 57 more green balls than orange balls, how many orange balls were there in the bag?