After 9

After reducing the price by 10%, the dress costs 270 GEL. What was the cost of the dress before it got cheaper?

Correct answer:

a =  300 GEL

Step-by-step explanation:

r=100%10%=110010=0.9 b=270 GEL  a r = b  a=b/r=270/0.9=300 GEL

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