A shirt is on sale for 25% off and you paid $21.75. What was the original cost of the shirt?
2 answers:
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Answer: 30
Step-by-step explanation: To solve this problem, we're going to have to use the Pythagorean theorem...
a² + b² = c²
24² + 18² = c²
576 + 324 = c²
c² = 900
30
30 = c
I hope this helps!