A: First, we find how much a normal person pays for a bike during the sale. We do this by multiplying 237.99 by .75. We multiply it by 0.75 because 25% off is 75% of the original price. This equals 178.4925. Now we multiply this by .9 to find how much Baron pays. This equals 160.6433. We round this up to $161, so the answer is B.
B: We find this by subtracting 161 from 237.99. This is equal to 76.9, which is closest to $77.
