Aspire Faculty ID #9496 · Topic: NIMCET 2020 · Just now
NIMCET 2020

It was 9.35 AM in Garvita’s watch, which kept correct time, when Manya informed her that the last bus left the bus stop at 9.25 am. Manya’s watch is 5 min fast. The frequency of the bus is every 20 min. For how long Garvita must wait to catch the next bus?

Solution

Garvita’s time is correct, so current time = 9:35 AM.
Manya’s watch is 5 minutes fast, so 9:25 AM on Manya’s watch means actual time = 9:20 AM.
Buses come every 20 minutes, so next bus after 9:20 AM is at 9:40 AM (actual time).
Waiting time = 9:40 AM − 9:35 AM = 5 minutes.

Answer: 5 minutes

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