Subject: mathqa
Question: the sum of two numbers is 16 . the difference is 4 . what are the two numbers ? let x be the first number . ley y be the second number x + y = 16 x - y = 4
Option: 
A: 10 and 2
B: 10 and 4
C: 10 and 5
D: 10 and 6
Answer: D