Question

what is the measurement for f
a b c d e f g h i j
3 7/8\
3 3/4\
3 5/8\
3 1/2\

Explanation:

Step1: Identify unit of ruler

The ruler is divided into eighths of an inch.

Step2: Locate position of F

F is 6 marks past 3 inches.

Step3: Calculate measurement

Since each mark is $\frac{1}{8}$ of an inch, 6 marks past 3 inches is $3+\frac{6}{8}=3\frac{3}{4}$ inches.

Answer:

3 3/4"