Tutor profile: Jennifer C.
18 – x = 12
x = 6 You can solve this problem through simple inspection. Because 18 – 6 = 12, x = 6.
Subject: Basic Math
1. An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for $306. How much did it originally cost?
The equation, x-0.10x-0.15(x-0.10x)=306, may be used to solve the problem. Solving for x gives 0.90x – 0.15x + 0.015x = 306, where x = 400. Thus, the original price was $400.
Subject: US History
Between which years was the Civil War fought?
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