
How many seconds are there in 3 days?
A.259200 s
B.172800 s
C.24800 s
D.72000 s
Answer
489.3k+ views
Hint: This question can easily be solved using the facts that how many seconds are in a minute, how many minutes are there in an hour and how many hours are there in a day. Hence, we would easily be able to find how many seconds are there in 3 days by just multiplying these facts correctly without making any kind of calculation mistakes.
Complete step-by-step answer:
Now, as we know, there are 60 seconds in 1 minute.
Also, in 1 hour, there are 60 minutes
Hence, from both the sentences, we know that in hour, there are minutes and in minute there are seconds.
Hence,
Now, in day, there are hours.
Hence, total seconds in a day would be:
Now, since, in a day there are seconds.
Hence, total number of seconds in 3 days will be:
Hence, option A is the correct option.
Note: This question can also be solved using the ‘Unit Factor Method’ which means that if we multiply any expression or number by ‘one’, then the expression or number would remain unchanged, i.e. their value would not be affected.
First of all, we would write all the basic facts related to this question that we know, i.e.
Now, using Unit Factor, we can write all the above three facts as:
Now, we have to find out how any seconds are there in 3 days.
Now, we will eliminate days, hours and min from numerator and denominator respectively (as they will cancel out with each other)
Hence, option A is the correct answer.
We can solve this question using either of the two ways.
Complete step-by-step answer:
Now, as we know, there are 60 seconds in 1 minute.
Also, in 1 hour, there are 60 minutes
Hence, from both the sentences, we know that in
Hence,
Now, in
Hence, total seconds in a day would be:
Now, since, in a day there are
Hence, total number of seconds in 3 days will be:
Hence, option A is the correct option.
Note: This question can also be solved using the ‘Unit Factor Method’ which means that if we multiply any expression or number by ‘one’, then the expression or number would remain unchanged, i.e. their value would not be affected.
First of all, we would write all the basic facts related to this question that we know, i.e.
Now, using Unit Factor, we can write all the above three facts as:
Now, we have to find out how any seconds are there in 3 days.
Now, we will eliminate days, hours and min from numerator and denominator respectively (as they will cancel out with each other)
Hence, option A is the correct answer.
We can solve this question using either of the two ways.
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