sue buys a shirt at a 30% markup. It costs her 31.20 before tax. What was the price of the shirt before the markup?
2 answers:
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Answer:
Correct choice is A
Step-by-step explanation:
For the numbers 13 and 88, find the difference 88-13:
since 88-13=75 and (two arithmetic means tells you there will be three intervals), two arithmetic means will be
- 13+25=38;
- 38+25=63.
The only correct sequence is 13, 38, 63, 88.