Ethan and Mark have 11 balls altogether. Ethan has 1 more balls than Mark. Find the number of balls each boy has.
- Mark
- Ethan
Number of balls that Mark has = 1 u
Number of balls that Ethan has = 1 u + 1
Total number of balls
= 1 u + 1 u + 1
= 2 u + 1
2 u + 1 = 11
2 u = 11 - 1 = 10
1 u = 10 ÷ 2 = 5
(a)
Number of balls that Mark has
= 1 u
= 5
(b)
Number of balls that Ethan has
= 1 u + 1
= 5 + 1
= 6
Answer(s): (a) 5; (b) 6
