The answer would be $15
All you need to do is multiply each one by .4 and see which one equals 6.
15 x .4 =6
Hope this helps!
27-18=9 (difference between)
9/18=0.5 (9 as a percentage of original as a decimal)
0.5x100=50 (as a percentage)
50% increase
It would be 8√17 because the seventeens don't change only the one that subtracting 9.
