Question

Maria and edwin have 23.00 each to spend at a book fair where all students receive 25% discount. They both want to purchase a copy off the same book, which normally sells for 26.50 plus 10% sales tax. To check if she has enough to purchase a book , Maria takes 25% of $26.50 and subtracts that amount from the normal price. She takes 10% of the discounted selling price and adds it back to find the purchase amount. Edwin takes 75% of the normal price and then computes 110% of the reduced price. Is maria correct? Is edwin correct? Do they have enough money to purchase the book? Explain your answer using complete sentences and show your work

Answer 1

Both Maria and Edwin are correct

Maria's method
25% of 26.50 = 6.625
26.50 - 6.625 = 19.875
10% of 19.875 = 1.9875
19.875 + 1.9875 = 21.8625 as final price

Edwin's method
75% of 26.50 = 19.875
110% of 19.875 = 21.8625 as final price

The book is 25% off the original price, so the remaining value is 75% of the original value
By adding 10% tax on to the original price, the final price will be 100%+10%=110% of the original price

Both Edwin and Maria has enough money to purchase the book