The distance between two places R and S is 42 km. Anita starts from R with a uniform speed of 4 km/hr towards S and at the same time Romita starts from S towards R also with some uniform speed. They meet each other after 6 hours. The speed of Romita is :

A. 18 km/hr

B. 20 km/hr

C. 3 km/hr

D. 8 km/hr

Answer: Option C

Solution (By Examveda Team)

Let speed of Romita be x km
According to the question,

(4 + x) = $$\frac{42}{6}$$ $$\left( {{\text{S = }}\frac{{\text{D}}}{{\text{T}}}} \right)$$
4 + x = 7
x = 3 km/hr