Question
The ratio of Isaac's erasers to Layla's erasers at first was 3 : 5. After Isaac gave Layla 60 erasers, the ratio of Isaac's erasers to Layla's erasers is 1 : 3. What was the number of erasers they had in all?
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The ratio of Isaac's erasers to Layla's erasers at first was 3 : 5. After Isaac gave Layla 60 erasers, the ratio of Isaac's erasers to Layla's erasers is 1 : 3. What was the number of erasers they had in all?