Riordan had 278 cards less than Fiona. Given that they have a total of 690 cards,
- How many cards did Fiona have?
- How many cards did Riordan have?
(a)
Number of cards that Fiona had = 1 u
Number of cards that Riordan had = 1 u - 278
Total number of cards
= 1 u + 1 u - 278
= 2 u - 278
2 u - 278 = 690
2 u = 690 + 278
2 u = 968
1 u = 968 ÷ 2 = 484
Number of cards that Fiona had
= 1 u
= 484
(b)
Number of cards that Riordan had
= 1 u - 278
= 484 - 278
= 206
Answer(s): (a) 484; (b) 206
