Answer:
Equation have Unique solution i.e 
Step-by-step explanation:
Given Equation:

Solving the Equation for 'x'.

Adding '
' both sides:

Adding '42' both sides:


The equation have Unique solution with the value of 
I think it’s D or maybe just maybe it’s will have to be B
4) 10% or 1/10
5) 24% or 6/25
6) 34% or 17/50
8) 8% of 2/25
The answer you are looking for is:
(1/8)*24=
3
hope that helps!!
Have a wonderful day!!