3.THE markdown percent for a camera is 20%.if the new retail price is RM250, find the old retail price.

Multiply:

250*1.2 = ??

(RM250 x 120%)

80%/100% * 250 = 312.5

old price --- x

.8x = 250
x = 250/.8 = 312.50

check:
markdown on 312.50 = .2(312.50) = 62.50
new price = 312.50 - 62.50 = 250

how get .8 ?100-20=80 then divided by 100 = .8 ?

I respectfully disagree, the answers are not the same

If I take a take a 20% markdown on your $300
I get $60, which would leave a new price of $240, not $250

To find the old retail price, we need to reverse the effect of the markdown percentage.

Step 1: Convert the markdown percentage into a decimal. The markdown percentage is 20%, so we divide it by 100 to get 0.2.

Step 2: Subtract the markdown percentage from 1 to find the percentage of the original price that remains. 1 - 0.2 = 0.8.

Step 3: Divide the new retail price by the percentage we just calculated to find the old retail price.

Old retail price = New retail price / Percentage

Old retail price = RM250 / 0.8

Old retail price = RM312.50

Therefore, the old retail price of the camera was RM312.50.

rm250/100x120 ?

is that true my formula?