Problema Solution
Dedra adds 3 dimes, 4 quarters, and 7 nickels into a money jar. Dedra then takes out 1 quarter and five dimes the next day. Write an expression that shows how the overall amount of money in the jar increased or decreased. Then simplify the expression.
Answer provided by our tutors
let
1 nickle = 5 cents
1 dime = 10 cents
1 quarter = 25 cents
the overall amount of money in the jar at the start (3 dimes, 4 quarters, and 7 nickels into a money jar):
3*10 + 4*25 + 7*5 = 165 cents
after Dedra then takes out 1 quarter and five dimes the next day there are:
165 - 1*25 - 5*10 = 90 cents
the overall amount of money decreased (since 90 < 165) by:
165 - 90 = 75 cents.