Question

b) 0.5 of 18 +0.02) - 4​

Answer 1

Answer:

0.5 percent *18 =

(0.5:100)*18 =

(0.5*18):100 =

9:100 = 0.09

Step-by-step explanation:

Step 1: Our output value is 18.

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

Step 3: From step 1 above,$18=100\%$.

Step 4: Similarly, $x=0.5\%$.

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

$18=100\%(1)$.

$x=0.5\%(2)$.

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

$\frac{18}{x}=\frac{100\%}{0.5\%}$

Step 7: Again, the reciprocal of both sides gives

$\frac{x}{18}=\frac{0.5}{100}$

$\Rightarrow x=0.09$

Therefore, $0.5\%$ of $18$ is $0.09$