A car traveling with 5/7 of its actual speed covers 42 km in 1 hr 40 min 48 sec. What is the actual speed of the car?
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Answered by
1
Let the actual speed of car be xm/sec
A/q
=>5/7 of xm/sec = 4200 m/6048 sec
=>x m/sec=4200 × 7/6048×5
=>x=105/108 m/sec
=>x=(105/108)×18/5 km/h
So, x=21/6km/h
Srishti09:
If u find the solution right please mark it as best answer!!!
Time taken = 1 hr 40 min 48 sec = 1 hr 40 4/5min = 1 51/75hrs =126/75hrs.
Let the actual speed be x km/hr.
Then,
x =(42 x 7 x 75)/5*126= 35 km/hr.
Let the actual speed be x km/hr.
Then,
x =(42 x 7 x 75)/5*126= 35 km/hr.
Maine jaise banaya!! Usme kha pr wrong hua!?
Please mujhe bataiye!?
I'm unable to search my mistake!?
Time taken = 1 hr 40 min 48 sec = 1 hr 40 4/5min = 1 51/75hrs =126/75hrs.Let the actual speed be x km/hr.Then,x =(42 x 7 x 75)/5*126= 35 km/hr.
Aapne km/hr krke solve kiya h aur maine m/sec krke solve kiya h, aapka solution right h mgr mere solution hmne kha mistake kr diya h ki mera ans nhi aaya!! @
Answered by
2
Time taken = 1 hr 40 min 48 sec = 1 hr 40 4/5min = 1 51/75hrs =126/75hrs.
Let the actual speed be x km/hr.
Then,
x =(42 x 7 x 75)/5*126= 35 km/hr.Baru1 32 minutes ago
correct..thank u...
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