Fred had 397 marbles less than Fiona. Given that they have a total of 629 marbles,
- How many marbles did Fiona have?
- How many marbles did Fred have?
(a)
Number of marbles that Fiona had = 1 u
Number of marbles that Fred had = 1 u - 397
Total number of marbles
= 1 u + 1 u - 397
= 2 u - 397
2 u - 397 = 629
2 u = 629 + 397
2 u = 1026
1 u = 1026 ÷ 2 = 513
Number of marbles that Fiona had
= 1 u
= 513
(b)
Number of marbles that Fred had
= 1 u - 397
= 513 - 397
= 116
Answer(s): (a) 513; (b) 116
