Answer:
i cant see the photo its messy or is it just me
Step-by-step explanation:
the original price is "x", or 100%.
but we know that if we reduce "x" by 20%, namely 100% - 20% = 80%, the 80% of "x" is really £50, what is "x" or the 100% anyway?

Answer: 5000000000
Step-by-step explanation: i just know
X= 10 I did it on my calculator so don’t worry :)