Problema Solution
A library was mistakenly charged sales tax on an order of books. The invoice, including the 5% sales tax, came to $1323. How much should the library have been charged?
Answer provided by our tutors
let x be the price that the library should have charged
x + 5% of x (tax money) = 1323
x + (5/100)x = 1323
by solving the equations we find
x = $1260
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the library should have been charged $1260.