Question

I'll mark brainliest if you help me on this

Answer 1

Answer:

3 3/4 i think

Answer 2

the two thickest books are:

$\tt 1\dfrac{6}{8}~and~2$

the total:

$\tt 1\dfrac{6}{8}+2=\dfrac{14}{8}+\dfrac{16}{8}=\dfrac{30}{8}=3\dfrac{6}{8}=3\dfrac{3}{4}$