Answer :
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.
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.