ANSWER
[tex] \frac{38}{10} [/tex]
EXPLANATION
We want to write
[tex]3.8[/tex]
in the form
[tex] \frac{a}{b} [/tex]
We multiply the numerator by multiples of 10 until we get an integer(the least integer) and then divide by the same value we multiplied with.
This implies that,
[tex]3.8 = \frac{3. 8\times 10}{10} = \frac{38}{10} [/tex]
We have [tex]a=38[/tex] and
[tex]b=10[/tex]
Therefore the correct answer is B.
