20 percent *400 =
(20*400)/100 =
8000/100 = 80
20 percent of 400 = 80
Question: What is 20 percent of 400?
Percentage solution with steps:
Step 1: Our output value is 400.
Step 2: We represent the unknown value with x
Step 3: From step 1 above, 400=100%
Step 4: Similarly, x=20%
Step 5: This results in a pair of simple equations:
$400=100%(1)
x=20%(2)
Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have
400/x=100%/20%
Step 7: Again, the reciprocal of both sides gives
x/400=20/100
x=80$.
Therefore, 20% of 400 is $80.
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