Request a call back

Join NOW to get access to exclusive study material for best results

ICSE Class 7 Answered

A policeman follows a thief is 800 metre ahead of him. If they run at the speed of 8 km per hour and 7 km per hour respectively, How long the policeman take to catch up with the thief?
Asked by Pradeep | 20 Aug, 2018, 09:59: PM
Expert Answer
begin mathsize 16px style Relative space speed space of space the space policeman space with space respect space to space the space thief space equals space 9 space minus space 8 space equals space 1 space space km divided by hr.
800 space straight m space equals space 800 over 1000 space equals space 4 over 5
Therefore comma space time space taken space by space the space policeman space to space catch space the space thief space equals space open parentheses 4 over 5 close parentheses divided by 1 space equals space 4 over 5 space hr space
Distance space run space by space the space thief space space equals space 8 space cross times space 4 over 5 space equals space 32 over 5 km space equals space space 32 over 5 cross times space 1000 equals space 6400 space straight m

end style
Answered by Yasmeen Khan | 23 Aug, 2018, 02:13: PM
ICSE 7 - Maths
Asked by sl529321 | 22 Jan, 2023, 10:13: PM
ANSWERED BY EXPERT
ICSE 7 - Maths
Asked by msitar158 | 09 Jan, 2023, 06:08: PM
ANSWERED BY EXPERT
ICSE 7 - Maths
Asked by daksh10268 | 07 Jan, 2023, 03:38: PM
ANSWERED BY EXPERT
ICSE 7 - Maths
Asked by shwethac605 | 18 Oct, 2022, 06:55: PM
ANSWERED BY EXPERT
ICSE 7 - Maths
Asked by skkaulgud | 13 Aug, 2022, 11:25: AM
ANSWERED BY EXPERT
ICSE 7 - Maths
Asked by pkumari24270 | 12 Jul, 2022, 07:48: PM
ANSWERED BY EXPERT
ICSE 7 - Maths
Asked by pkumari24270 | 12 Jul, 2022, 07:47: PM
ANSWERED BY EXPERT
ICSE 7 - Maths
Asked by harshkushwaha734 | 07 Jul, 2022, 04:48: PM
ANSWERED BY EXPERT
ICSE 7 - Maths
Asked by rupabharakhda2018 | 04 Jul, 2022, 06:04: AM
ANSWERED BY EXPERT
Get Free Sample Papers
×