Subject: General Aptitude · Chapter: Time and Distance · Exam: · Marks: · Difficulty:
By walking at of his usual speed, a man reaches his office 20 minutes later than his usual time. Find 4 the usual time taken by him to reach his office. (S.S.C., 2010) 3
Answer
Answer (as printed):
Explanation
New speed = of usual speed. 4 4 \ New time taken = of usual time. 3 4 So, of the usual time – (usual time) = 20 min 3 1 ⇒ of the usual time = 20 min ⇒ Usual time = 60 min = 1 hr. 3 TIME AND DISTANCE 565
Explanation as extracted from the printed page; notation may be imperfect.