Plz help Make sure to explain and thank you!!!!!

Answer:
3) what is 0.1% of 75?
Percentage solution with steps:
Step 1: Our output value is 75.
Step 2: We represent the unknown value with x
Step 3: From step 1 above,75=100%.
Step 4: Similarly, x=0.1%
Step 5: This results in a pair of simple equations:
75 = 100%(1)
x = 0.1%(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
[tex]\frac{75}{x} = \frac{100 }{0.1}[/tex]%
Step 7: Again, the reciprocal of both sides gives
[tex]\frac{x}{75} = \frac{0.1}{100}[/tex]
⇒ x = 0.075
Therefore, 0.1% of 75 is 0.075.
4) what is 0.5% of 75?
Therefore , 0.5% of 75 is 0.375.
pls use the way i solve number 3 to solve number 4 but the answer is 0.375.