Question 1
The sum of two natural numbers is equal to three times their difference, and their product is equal to four times their sum. What is the sum of these two natural numbers?
(A) 9
(B) 10
(C) 12
(D) 15
(E) 18
(A) 9
(B) 10
(C) 12
(D) 15
(E) 18