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 kilometres will he have to cycle to reach his home straight?
A
10 km
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
15 km
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
20 km
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
25 km
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is B 15 km Let us consider a Cartesian plane thinking positive X-axis as East; negative one as West; positive Y-axis as North; negative as South.
Now Ravi is at origin.
Here he goes 10 km to negative Y axis after that 5 Km towards negative X axis; then towards positive Y axis 10 Km and finally 10 Km negative X axis.
Hence, finally he will be at a distance of 15 Km from the origin horizontally that is from his house.