On a certain day, John decided to go to school using his newly purchased skates. So, he left his house and skated 15 km northwards, then turned left and skated 7 km, then he took another left turn and skated 15 km, and then finally turned right and skated 13 km. How far exactly is his school from his house?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 20 km.
According to the given information:
From the diagram;
OD = (OC = AB) + CD
OD = AB + CD
OD = 7 + 13 = 20 km
Hence, John's school is 20km away from his house.