A microwave oven costing RM500 was marked up 10% based on retail price. later it was marked down by 5%. WHAT is the final retail price?

i get

RM500/100X110=RM550

RMM550(1-0.05)

=RM522.5

but in my book the answer is rm527.78 ?

I agree with you.

then ? which one is true ?

DDDDDDDDOOOOOOOOOOONNNNNNT AGREWE WITH THE FAKE ME WHO IS A CRAZY HACKER WHO DOESNT KNOW WHO SHES MESSIN WITH HEEEELLLLPPPPPPPPPPP

To calculate the final retail price, we can follow these steps:

1. Start with the original price of RM500.

2. Apply a markup of 10% to the original price. To do this, multiply RM500 by 110% (or 1.10) because 110% represents the original price plus the 10% markup:
RM500 * 1.10 = RM550

3. Next, apply a markdown of 5% to the new price of RM550. To do this, multiply RM550 by 95% (or 0.95) because 95% represents the original price minus the 5% markdown:
RM550 * 0.95 = RM522.50

Based on the calculations, the final retail price should be RM522.50, which is a markdown of 5% from the price after the 10% markup.

It's possible that the answer provided in your book, RM527.78, might be calculated using a slightly different method or rounding conventions. However, based on the information given and the calculations, the closest and most accurate answer is RM522.50.