Problema Solution
al saves pennies. he agreed to give 4/9 of his pennies to Bev if she sould give 4/9 of what she got from al to carl and if carl in turn would give 4/9 of what he got from bev to dani. bev, carl, and dani agreed and dani received 960 pennies. how many pennied did al have initially?
Answer provided by our tutors
let
a = the pennies that Al had initially
Al gives (4/9)a pennies to Bev
Bev gives (4/9)(4/9)a to Carl
Carl gives (4/9)(4/9)(4/9)a to Dani
Dani received (4/9)(4/9)(4/9)a = 960 pennies
(4/9)(4/9)(4/9)a = 960
(64/729)a = 960
a = (960*729)/64
a = 10,935 pennies
Al had 10,935 pennies initially.