How Many Seconds Are There In 3 Days? A.259200 S B ... - Vedantu

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AnswerQuestion Answers for Class 12Class 12 BiologyClass 12 ChemistryClass 12 EnglishClass 12 MathsClass 12 PhysicsClass 12 Social ScienceClass 12 Business StudiesClass 12 EconomicsQuestion Answers for Class 11Class 11 EconomicsClass 11 Computer ScienceClass 11 BiologyClass 11 ChemistryClass 11 EnglishClass 11 MathsClass 11 PhysicsClass 11 Social ScienceClass 11 AccountancyClass 11 Business StudiesQuestion Answers for Class 10Class 10 ScienceClass 10 EnglishClass 10 MathsClass 10 Social ScienceClass 10 General KnowledgeQuestion Answers for Class 9Class 9 General KnowledgeClass 9 ScienceClass 9 EnglishClass 9 MathsClass 9 Social ScienceQuestion Answers for Class 8Class 8 ScienceClass 8 EnglishClass 8 MathsClass 8 Social ScienceQuestion Answers for Class 7Class 7 ScienceClass 7 EnglishClass 7 MathsClass 7 Social ScienceQuestion Answers for Class 6Class 6 ScienceClass 6 EnglishClass 6 MathsClass 6 Social ScienceQuestion Answers for Class 5Class 5 ScienceClass 5 EnglishClass 5 MathsClass 5 Social ScienceQuestion Answers for Class 4Class 4 ScienceClass 4 EnglishClass 4 MathsHow many seconds are there in 3 days?A.259200 sB.172800 sC.24800 sD.72000 s AnswerVerified562.8k+ viewsHint: 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.\[ \Rightarrow 1{\rm{ min = }}60{\rm{ s}}\]Also, in 1 hour, there are 60 minutes\[ \Rightarrow 1{\rm{ hour = }}60{\rm{ min}}\]Hence, from both the sentences, we know that in \[1\] hour, there are \[60\] minutes and in \[1\] minute there are \[60\]seconds.Hence,\[1{\rm{ hour = }}60{\rm{ }} \times {\rm{ 60 s}}\]\[ \Rightarrow 1{\rm{ hour = 3600 s}}\]Now, in \[1\] day, there are \[24\] hours.Hence, total seconds in a day would be:\[1{\rm{ day = }}24{\rm{ hours = 24}} \times {\rm{3600 s}}\]\[ \Rightarrow 1{\rm{ day = 86400 s}}\]Now, since, in a day there are \[86400\] seconds.Hence, total number of seconds in 3 days will be:\[{\rm{3 days = 3}} \times {\rm{ 86400 s}}\]\[ \Rightarrow {\rm{3 days = 259200 s}}\]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.\[1{\rm{ day = }}24{\rm{ hours }}\]\[1{\rm{ hour = }}60{\rm{ min}}\]\[1{\rm{ min = }}60{\rm{ s}}\]Now, using Unit Factor, we can write all the above three facts as:\[\dfrac{{24{\rm{ hours }}}}{{1{\rm{ day}}}} = 1\]\[\dfrac{{60{\rm{ min}}}}{{1{\rm{ hour }}}} = 1\]\[\dfrac{{60{\rm{ s}}}}{{1{\rm{ min}}}} = 1\]Now, we have to find out how any seconds are there in 3 days.\[ \Rightarrow 3{\rm{ days = }}3{\rm{ days}} \times \dfrac{{24{\rm{ hours }}}}{{1{\rm{ day}}}} \times \dfrac{{60{\rm{ min}}}}{{1{\rm{ hour }}}} \times \dfrac{{60{\rm{ s}}}}{{1{\rm{ min}}}}\]Now, we will eliminate days, hours and min from numerator and denominator respectively (as they will cancel out with each other)\[ \Rightarrow 3{\rm{ days = }}3 \times 24 \times 60 \times 60{\rm{ s}}\]\[ \Rightarrow 3{\rm{ days = 259200 s}}\]Hence, option A is the correct answer.We can solve this question using either of the two ways.Recently Updated PagesYou are awaiting your class 10th results Meanwhile class 7 english CBSEWhich one of the following islands is closer to the class 7 social science CBSEwas given the title of NizamulMulk class 7 social science CBSEThe reciprocal of a positive rational number is class 7 maths CBSEHow much lace will be needed to put around a square class 7 maths CBSEWhich of the following is the correct chronological class 7 social science CBSEYou are awaiting your class 10th results Meanwhile class 7 english CBSEWhich one of the following islands is closer to the class 7 social science CBSEwas given the title of NizamulMulk class 7 social science CBSEThe reciprocal of a positive rational number is class 7 maths CBSEHow much lace will be needed to put around a square class 7 maths CBSEWhich of the following is the correct chronological class 7 social science CBSE

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