Today John is 3 times older than Mark. If in 12 years, John will be one year younger than twice the age of Mark on that day, how old is John today?  Choices
A) 13
B) 33
C) 36
D) 38
E) 39
t   Given after 12yrs john will be 1 year younger than twice mark's age   i.e 3M+12 = 2(M+12)-1   M=11   =&gt;John's current age = 3M = 33   Answer is 33
<result>B</result>
Today John is 3 times older than Mark. If in 12 years, John will be one year younger than twice the age of Mark on that day, how old is John today?