Justin and Jack have 11 balls altogether. Justin has 9 more balls than Jack. Find the number of balls each boy has.
- Jack
- Justin
Number of balls that Jack has = 1 u
Number of balls that Justin has = 1 u + 9
Total number of balls
= 1 u + 1 u + 9
= 2 u + 9
2 u + 9 = 11
2 u = 11 - 9 = 2
1 u = 2 ÷ 2 = 1
(a)
Number of balls that Jack has
= 1 u
= 1
(b)
Number of balls that Justin has
= 1 u + 9
= 1 + 9
= 10
Answer(s): (a) 1; (b) 10
