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 5 years hence?
Select the correct option:
A) 100
B) 80
C) 70
D) 20
E) 40
A + B = 60, A = 2B   2B + B = 60 =&gt; B = 20 then A = 40.   5 years, their ages will be 45 and 25.   Sum of their ages = 45 + 25= 
<gadget id="calculator">45 + 25</gadget>
<output>70</output>
70.   answer is 70.
<result>C</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 5 years hence?