defence exam CRPF Head Constable Ministerial & ASI 2022 Mock Test Quantitative Aptitude Speed Time and Distance Partial Speed
John walked half the distance to school. He realized that he was late and ran the rest of the distance If he walked for 12 minutes and he ran four times as fast as he walked, then the total time taken by John to reach school is _______.
1
18 min
2
15 min
3
21 min
4
25 min