7% of 100 is 7. Extrapolate. 100 is 1/4 of 400, so 7 times 4 is 28. hence 28 is the answer.
400 dollars 2000 x .20 = 400
$12
15% of $400.00= 15% * 400= 0.15 * 400= $60.00
70% of $400 = 70% x $400 = 0.70 x $400 = $280
$4. one percent = 1/100 hence $400 x 0.01 = $4
75 percent of 400 dollars is 300 dollars.
30% of 400 dollars = 400 dollars * 30/100 = 120 dollars.
55% of 400 dollars = 400*55/100 = 220 dollars
30% off of 400 dollars = 70% of 400 dollars = 400*70/100 = 280 dollars
50% off of 400 dollars is 200 dollars
400 x 0.2 = 80 dollars 400 - 80 = 320 dollars
400 dollars increased by 300% results in 1,600 dollars.
400 dollars 2000 x .20 = 400
240 dollars
It will be 160 dollars
Percent means "out of 100" → 9 % of $400 = 9/100 x $400 = $36
30% of $400 = 30% * 400 = 0.3 * 400 = $120