Question
The ratio of Mason's erasers to Lily's erasers at first was 3 : 7. After Mason gave Lily 48 erasers, the ratio of Mason's erasers to Lily's erasers is 1 : 3. What was the number of erasers they had altogether?
2 m

Click button first when a symbol is required. X

The ratio of Mason's erasers to Lily's erasers at first was 3 : 7. After Mason gave Lily 48 erasers, the ratio of Mason's erasers to Lily's erasers is 1 : 3. What was the number of erasers they had altogether?