Answer:
12.5%
Step-by-step explanation:
Step 1: Our output value is 500.
Step 2: We represent the unknown value with n.
Step 3: From step 1 above, 500=100\%
Step 4: Similarly, n=2.5\%.
Step 5: This results in a pair of simple equations:
500=100\%(1).
n=2.5\%(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
\frac{500}{n}=\frac{100\%}{2.5\%}
Step 7: Again, the reciprocal of both sides gives
\frac{n}{500}=\frac{2.5}{100}
\==> x=12.5
Therefore, 2.5\% of 500 is 12.5
