Mathematics, 19.07.2019 03:30, leo4687

In a school gym the ratio of the number of boys to the number of girls were 4: 3. after 160 days boys left the gym, the ratio became 4: 5. how many girls were there in the gym?

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In a school gym the ratio of the number of boys to the number of girls were 4: 3. after 160 days boy...