SOLUTION: Lydia bought a stack of magazines to resell for profit. She sold half of them on Tuesday. She sold 10 on Wednesday. She sold half of what was left on Thursday. On Friday she so

Question 450558: Lydia bought a stack of magazines to resell for profit. She sold half of them on Tuesday. She sold 10 on Wednesday. She sold half of what was left on Thursday. On Friday she sold the remaining 8 magazines. How many magazines did she begin with?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Lydia bought a stack of magazines to resell for profit. She sold half of them on Tuesday. She sold 10 on Wednesday. She sold half of what was left on Thursday. On Friday she sold the remaining 8 magazines. How many magazines did she begin with?
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Let original number be "x".
Equation:
(1/2)[x - (1/2)x-10] = 8
-------------------
16 = (1/2)x-10
(1/2)x = 26
x = 52
-----
Checking:
(1/2)[52-26-10) = 8
16 = 16
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Cheers,
Stan H.
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