Answer:

Step-by-step explanation:

X=10 Y=1.25; X=8 Y=1; X=6 Y=0.75; X=4 Y=0.5
20 imperial gallons = 90.9218 litres
so i'd say you'd need to buy 91 bottles or...
20 US Liquid gallons = 75.7082 litres
so you'd have to buy 76 bottles.
Hope this answers your question! It depends what gallon you're working from.
Answer:
Yes by SSS because you have the same hypotenuse and same hatch marks on other sides