SOLUTION: A pack of two genuine belts cost $90.00. There is a hand written sale sign on the table saying 50% off plus an additional 40% off today only. 50% and an additional 40% is 90% off.

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: A pack of two genuine belts cost $90.00. There is a hand written sale sign on the table saying 50% off plus an additional 40% off today only. 50% and an additional 40% is 90% off.       Log On


   

Question 985820: A pack of two genuine belts cost $90.00. There is a hand written sale sign on the table saying 50% off plus an additional 40% off today only. 50% and an additional 40% is 90% off. This means you should get $81.00 off. Now you are positive the price should be $9.00. How in the world did they get $27.00? Who is correct the sign or you? If the sign is correct,show your work to prove the sign true.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


No. 50% off and then an additional 40% off is not 90% off. First you take off 50%. Then you take 40% off of the 50% that remains.

Start with $90 and take off 50%, you have $45. Then take off 40% of the $45. 0.4 times 45 is 18. 45 minus 18 is 27.

John

My calculator said it, I believe it, that settles it