question_answer

One day, Ravi left home and cycled 10 km southwards, turned right and cycled 5 km and turned right and cycled 10 km and turned left and cycled 10 km. How many kilometers will he have to cycle to reach his home straight?

A) 10km                          

B) 15km

C) 20km                          

D) 25km

Correct Answer: B

Solution :

    Here, Ravi starts from home at A, moves 10 km southwards up to B, turns right and moves 10 km up to C, turns right again and moves 10 km up to D and finally turns left and moves 10 km up to E. Thus, his distance from initial position A = AE \[=AD+DE\] \[=BC+DE=\left( 5+10 \right)km=15km.\]