Subject: General Aptitude · Chapter: Time and Distance · Exam: · Marks: · Difficulty:
Jacob’s house is 60 miles from the town. On Sunday, he went to town and returned home. How long did the entire trip take? I. He travelled at a uniform rate for the round trip of 30 miles per hour. II. If Jacob travelled 10 miles per hour faster, it 3 would have taken of the time for the round 4 trip.
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.
Explanation
I. Time taken for the round trip = hrs = 4 hrs. 30 II. Let the time taken for the round trip be x hours. 120 120 160 120 Then, – = 10 ⇔ – = 10 3 x x x x 4 ⇔ 10x = 40 ⇔ x = 4. Thus, I alone or II alone gives the answer. \ Correct answer is (c).
Explanation as extracted from the printed page; notation may be imperfect.