A woman is 18 years older than her son. In 3 years, her age will be twice the age of her son. The present age of her son is
Choose the correct choice from the following choices:
A) 18	B) 17	C) 15	D) 16	E) 14
Explanation:   Let the son's present age be x years. Then, woman's present age = (x + 18) years   =&gt; (x + 18) + 3 = 2(x + 3)   =&gt; x + 21 = 2x + 6   So, x = 15. Answer: 15
<result>C</result>
A woman is 18 years older than her son. In 3 years, her age will be twice the age of her son. The present age of her son is