Peter and Carl have 15 balls altogether. Peter has 9 more balls than Carl. Find the number of balls each boy has.
- Carl
- Peter
Number of balls that Carl has = 1 u
Number of balls that Peter has = 1 u + 9
Total number of balls
= 1 u + 1 u + 9
= 2 u + 9
2 u + 9 = 15
2 u = 15 - 9 = 6
1 u = 6 ÷ 2 = 3
(a)
Number of balls that Carl has
= 1 u
= 3
(b)
Number of balls that Peter has
= 1 u + 9
= 3 + 9
= 12
Answer(s): (a) 3; (b) 12
