Q) time> 2hours ?

10miles=16km

St.1) time=distance/speed

16/LT 6.4 =GT 2hours

(LT= Less Than)

A-Sufficient.

St.2) 1 km = GT 9min

16 x GT 9= GT 134min = GT 2hours.
(GT=Greater Than)

B-Sufficient

Ans:D

Is it correct to do this way?

St1 & St2)

x=LT8/9
y=LT1/8

Therefor x+y = LT8/9 +LT1/8= LT73/72

Hence it could be anything from just little over +1 OR 1 or LT +1 (positive fraction) OR any number/fraction infinetly in the negative.

Please correct me if I am wrong in my understanding. Thanks.