Question

A faulty watch gains 10 seconds an hour. If it is set correctly at 8:00 pm one evening, what time will it show when the correct time is 8:00 pm the following evening

Answer 1

Answer:

the faulty time will show 8:40 when the correct time in the watch is 8:00

Answer 2

Answer:

Watch will show 8:04 PM

Given:

A faulty watch gains 10 seconds an hour.

To find:

Time will it show when the correct time is 8:00 pm the following evening

Step-by-step explanation:

It is given that,

A faulty watch gains 10 seconds an hour.

First find the number of hours 8:00 PM in the evening and 8:00 PM in the next evening

No. of hours = 24 hours

Number of seconds gain by faulty watch.

In 1 hour = 10 seconds

In 24 hour = 24 × 10

⇒ 24 × 10 = 240 seconds

]Now calculate numbers of minute gain by faulty watch.

60 sec = 1 min

240 sec = 240/60

⇒ 4 min

so, watch gains 4 min till 8:00 PM in the next evening.

hence,

watch will show 8:04 PM, when it is actually 8:00 PM

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