Options: 1.18x 13/10x
0.82x
3/10x
7/10x
0.18x

scenarios:
the price of a game that's been discounted 18% off its list price

the price of the toy that sells for 18% more than the amount [x] needed to build the toy

the volume of water remaining in a tank after 9/10 of its original volume is drained out

the total amount of flour in a bakery After receiving new stock equal to 9/10% of it's current stock [X]

if you could help me out, that would be much appreciated, I have until 12:00 am to finish this test ;)