Answer:
Step-by-step explanation:
25 percent *78 =
(25:100)*78 =
(25*78):100 =
1950:100 = 19.5
Percentage solution with steps:
Step 1: Our output value is 78.
Step 2: We represent the unknown value with $x$.
Step 3: From step 1 above,$78=100\%$.
Step 4: Similarly, $x=25\%$.
Step 5: This results in a pair of simple equations:
$78=100\%(1)$.
$x=25\%(2)$.
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
$\frac{78}{x}=\frac{100\%}{25\%}$
Step 7: Again, the reciprocal of both sides gives
$\frac{x}{78}=\frac{25}{100}$
$\Rightarrow x=19.5$
Therefore, $25\%$ of $78$ is $19.5$
