Question
The ratio of Mia's stickers to Grace's stickers at first was 3 : 7. After Mia gave Grace 40 stickers, the ratio of Mia's stickers to Grace's stickers is 1 : 3. What was the number of stickers they had in total?
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The ratio of Mia's stickers to Grace's stickers at first was 3 : 7. After Mia gave Grace 40 stickers, the ratio of Mia's stickers to Grace's stickers is 1 : 3. What was the number of stickers they had in total?