sud21 wrote:G and R went to a same position for a picnic. G went by bike and R drove a car. Did R arrive there earlier than G?
1). G start out 30 minutes earlier than R
2). The speed of G is 10m/h, and the speed of R is 30 m/h

Stmt 1 - G could be starting much farther or nearer than R, and the speeds are also unknown. Hence INSUFFICIENT.

Stmt 2 - G has to cover a total of 0.1 miles more and R 10 miles, G reaches faster, similarly flip that and R reaches first. INSUFFICIENT.

Stmt 1 and 2 - essentially G has a lead of 5 miles over R. If the total distance for G and R is 6 miles. G reaches faster, however if total distance is 30 miles R reaches first. INSUFFICIENT.

Hence E

First of all we don't know if the starting point is same or not

(E) is the answer