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CBSE Class 11-science Answered

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Asked by Mastersword650 | 06 May, 2020, 11:32: AM
Expert Answer
  
 
T i m e space t a k e n space b y space g u a r d space A space t o space r e a c h space t h e space j u n c t i o n space equals space fraction numerator 10 space k m over denominator 50 space k m divided by h space end fraction space equals space 1 fifth space h r. space
T i m e space t a k e n space b y space g u a r d space B space t o space r e a c h space t h e space j u n c t i o n space equals space fraction numerator 10 space k m over denominator 75 space k m divided by h end fraction space equals space 2 over 15 space h r. space

T o space f i n d space t h e space t i m e space a t space w h i c h space t h e space b o t h space w i l l space r e a c h space t h e space j u n c t i o n comma space l e t apostrophe s space t a k e space L C M thin space o f space t i m e space t a k e n space b y space b o t h space g u a r d s. space

L C M space o f space 1 fifth space a n d space 2 over 15 space equals fraction numerator 2 space over denominator 5 end fraction space h r space equals space space 2 over 5 cross times 60 space equals space 24 space m i n space

bold italic T bold italic h bold italic u bold italic s bold comma bold space bold italic b bold italic o bold italic t bold italic h bold space bold italic g bold italic u bold italic a bold italic r bold italic d bold italic s bold space bold italic w bold italic i bold italic l bold italic l bold space bold italic r bold italic e bold italic a bold italic c bold italic h bold space bold italic a bold italic t bold space bold italic t bold italic h bold italic e bold space bold italic j bold italic u bold italic n bold italic c bold italic t bold italic i bold italic o bold italic n bold space bold italic a bold italic t bold space bold 6 bold colon bold 24 bold space bold italic a bold italic m bold space

I n space 24 space m i n comma space d i s tan c e space c o v e r e d space b y space g u a r d space A space w i l l space b e space equals space 50 space k m divided by h space cross times 2 over 5 space h equals 20 space k m space space
a n d space d i s tan c e space c o v e r e d space b y space g u a r d space B space w i l l space b e space equals space space 75 space k m divided by h space cross times 2 over 5 space h space equals space 30 space k m space
Answered by Shiwani Sawant | 06 May, 2020, 06:00: PM
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