Question

What number a is 25% of 78?

Answer 1

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 $19.5$

Answer 2

Dividing 78 by 4 gets you 19.5.