SOLUTION: after spending 5dollars isaac had twice as much money as luke. if luke had ten , howmuch money did isaac have at first?

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Question 1111382: after spending 5dollars isaac had twice as much money as luke. if luke had ten , howmuch money did isaac have at first?
Answer by amalm06(224) About Me  (Show Source):
You can put this solution on YOUR website!
Suppose Isaac had z amount at first.
After spending 5 dollars, z-5=20
z=$25 (Answer)