1.

Find the value of x 7.5% of 80 = x​

Answer»

Answer:

7.5 percent * 80 =

(7.5:100)* 80 =

(7.5* 80):100 =

600:100 = 6

Now we have: 7.5 percent of 80 = 6

Question: What is 7.5 percent of 80?

Percentage solution with steps:

Step 1: Our output VALUE is 80.

Step 2: We REPRESENT the unknown value with $x$.

Step 3: From step 1 above,$80=100\%$.

Step 4: Similarly, $x=7.5\%$.

Step 5: This results in a pair of simple equations:

$80=100\%(1)$.

$x=7.5\%(2)$.

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

$\frac{80}{x}=\frac{100\%}{7.5\%}$

Step 7: Again, the reciprocal of both SIDES gives

$\frac{x}{80}=\frac{7.5}{100}$

$\Rightarrow x=6$

Therefore, $7.5\%$ of $80$ is $6$


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