One year ago, the ratio of Sooraj's and Vimal's age was 6:7 respectively. Four years hence, this ratio would become 7:8. How old is Vimal?
Choose the most appropriate option:  A) 31  B) 32  C) 33  D) 36  E) 35
Let the age of Sooraj and Vimal, 1 year ago, be 6x and 7x respectively.   Given that, four years hence, this ratio would become 7:8   ⇒(6x+5):(7x+5)=7:8⇒8(6x+5)=7(7x+5)⇒48x+40=49x+35⇒x=5   Vimal's present age   =7x+1=7×5+1=36   Answer is 36.
<result>D</result>
One year ago, the ratio of Sooraj's and Vimal's age was 6:7 respectively. Four years hence, this ratio would become 7:8. How old is Vimal?