Answer:
37.65
Explanation:
you can set up the following proportion:
is/of = percent/100
'is' = 64
'of' = assign a variable
170% = 170/100
64/n = 170/100
cross-multiply to get:
170n = 6400
divide each side by 'n' to get:
n = 37.65 (rounded to nearest hundredth)