In a 800m race, a beats b by 80m and in 1000m race b beats c by 200m. If in 500m race a beats c by 35 sec, then the speed of b is
Answers
Answered by
1
Answer:
When A covers 800m, B covers 720m
When A covers 1000m, B covers x m (say)
800
1000
=
720
x
x
=
900
m
…... (1)
When B covers 1000m, C covers 800m
When B covers 900m, C covers
η
m
(say)
1000
900
=
800
y
y
=
720
m
…… (2)
From (1) and (2)
In 1000m race, A beats C by 280m
In 500m race, A beats C by 35sec
In 1000m race, A beater C by 70sec
C takes 70 sec to cover 280m
Speed of
C
=
280
m
70
sec
=
4
m
/
s
Time taken by C to travel
720
m
=
720
4
=
180
sec
Time taken by B to travel
900
m
=
180
sec
Speed of
B
=
900
m
180
sec
=
5
m
/
s
Step-by-step explanation:
Answered by
0
I have attached my working... hope this helps
Attachments:
Similar questions