Question
The ratio of David's cards to Ellie's cards at first was 3 : 7. After David gave Ellie 82 cards, the ratio of David's cards to Ellie's cards is 1 : 3. What was the number of cards they had in all?
2 m

Click button first when a symbol is required. X

The ratio of David's cards to Ellie's cards at first was 3 : 7. After David gave Ellie 82 cards, the ratio of David's cards to Ellie's cards is 1 : 3. What was the number of cards they had in all?