An element Q; contains 69% of 63Q and 31% of 65Q. What is the relative atomic mass of Q?

An element Q; contains 69% of ⁶³Q and 31% of ⁶⁵Q. What is the relative atomic mass of Q?

A. 63.0
B. 63.6
C. 65.0
D. 69.0

Correct Answer:

Option B = 63.6