350 is 70% of what number
500
420
245
280

what percent of 64 is 24
267%
62.5%
40%
37.5%

what percent of $6.50 is $2.60
25%
40%
90%
250%

20% of 140 is what answer
280
120
28
12

Learn this , it will help u with all of these percent problems.
percent formula : is/of = %/100

350 is 70% of what number
is = 350
% = 70
of = x
now sub
350/x = 70/100
cross multiply
70x = 35000
x = 35000/70
x = 509so 350 is 70% of 500.

is/of = %/100

what percent of 64 is 24...
% = x
is = 24
of = 64
now sub
24/64 = x/100
cross multiply
64x = 2400
x = 2400/64
x = 37.5..so 37.5% of 64 is 24

u get the idea
the last 2 answers are : 40% and 28