Bunuel wrote:

Madelyn has $400 to spend on her new school clothes and this is to cover the price of the clothes she buys and the sales tax on those items. Does Madelyn have less than 50 dollars left after completing her shopping?

(1) The total price of Madelyn's clothes was less than $400.

(2) Madelyn incurs no sales tax when purchasing school clothes.

Calculating the total amount of money requires two numbers - the cost before tax and the percent tax.

So we'll see if our data gives us these numbers. This is a Logical approach.

(1) gives us only the cost before tax. Insufficient.

(2) gives us only the percent tax. Insufficient.

Combined, we have both items and can find a solution. (400 + 0% = 400)

But - because (1) says 'less than 400' and not 'exactly 400' we still don't know if Madelyn had $50 left over!

(Did she pay more or less than $350?)

(E) is our answer.

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