David has $13. Ivan has $5
s more than David. Zeph has $2
s less than Ivan.
- Find the amount of money that Zeph has in terms of s.
- Find the total amount of money that the three boys have in terms of s.
- If s = 5, how much does Zeph have?
(a)
Amount that David has = $13
Amount that Ivan has = $(13 + 5
s)
Amount that Zeph has
= 13 + 5
s - 2
s = $(13 + 3
s)
(b)
Total amount that the three boys have
= 13 + 13 + 5
s + 13 + 3
s= 13 + 13 + 13 + 5
s + 3
s = $(39 + 8
s)
(c)
Amount that Zeph has
= 13 + 3
s= 13 + 3 x 5
= 13 + 15
= $28
Answer(s): (a) $(13 + 3
s) or $(3
s + 13); (b) $(39 + 8
s) or $(8
s + 39); (c) $28