The sum of the present ages of two persons A and B is 60. If the age of A is twice that of B, find the sum of their ages 10 years hence?  Options:
A) 58  B) 59  C) 62  D) 70  E) 80
Explanation:   A + B = 60, A = 2B   2B + B = 60 =&gt; B = 20 then A = 40.   10 years, their ages will be 50 and 30.   Sum of their ages = 50 + 30= 
<gadget id="calculator">50 + 30</gadget>
<output>80</output>
80.   80)
<result>E</result>
The sum of the present ages of two persons A and B is 60. If the age of A is twice that of B, find the sum of their ages 10 years hence?