The sum of the squares of two positive integers is 100 and the difference of their squares is 28. The sum of the numbers is 


(a) 
12 
(b) 
13 
(c) 
14 
(d) 
15 
The sum of the squares of two positive integers is 100 and the difference of their squares is 28. The sum of the numbers is 


(a) 
12 
(b) 
13 
(c) 
14 
(d) 
15 
Let the positive integers be and where
According to the question,
…
…
Solving these two eqns. We get