Problema Solution
Al save pennies. He gives 1/3 of his pennies to Bev, who give 1/3 of those pennies to Carl, who gives 1/3 of those pennies to Dani. Dani has 12 pennies. How many pennies did All start with?
Answer provided by our tutors
Let 'x' represent the number of pennies that Al starts with.
x/3 = the number of pennies Bev has
(1/3)(1/3)x = the number of pennies Carl has
(1/3)(1/3)(1/3)x = the number of pennies Dani has
Since Dani has 12 pennies we can write:
(1/3)(1/3)(1/3)x = 12
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click here to see the equation solved for x
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x = 324 pennies
Al started with 324 pennies.