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16 Jan 2017, 09:30
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66% (02:44) correct
34%
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The rear–most end of a 66 foot truck exits a 330 foot tunnel exactly 6 seconds after the front–most end of the truck entered the tunnel. If the truck traveled the entire tunnel at a uniform speed, what is the speed of the truck in miles per hour (1 mile = 5,280 feet)?
A. 225
B. 90
C. 45
D. 37.5
E. 27
A. 225
B. 90
C. 45
D. 37.5
E. 27
16 Jan 2017, 12:52
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Bunuel
The rear–most end of a 66 foot truck exits a 330 foot tunnel exactly 6 seconds after the front–most end of the truck entered the tunnel. If the truck traveled the entire tunnel at a uniform speed, what is the speed of the truck in miles per hour (1 mile = 5,280 feet)?
A. 225
B. 90
C. 45
D. 37.5
E. 27
A. 225
B. 90
C. 45
D. 37.5
E. 27
total distace covered =330+66=396foot = 396/5280 miles
time =6sec = 6/3600 hrs
speed = (396/5280)/(6/3600)
=45mph
Ans C
SI777
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Schools: Kelley '21 (A$) Tepper '21 (D) Kenan-Flagler '21 (WL) McDonough '21 (A$) Olin '21 (A$) Jones '21 (WL)
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17 Jan 2017, 00:16
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rohit8865
Bunuel
The rear–most end of a 66 foot truck exits a 330 foot tunnel exactly 6 seconds after the front–most end of the truck entered the tunnel. If the truck traveled the entire tunnel at a uniform speed, what is the speed of the truck in miles per hour (1 mile = 5,280 feet)?
A. 225
B. 90
C. 45
D. 37.5
E. 27
A. 225
B. 90
C. 45
D. 37.5
E. 27
total distace covered =330+66=396foot = 396/5280 miles
time =6sec = 6/3600 hrs
speed = (396/5280)/(6/3600)
=45mph
Ans C
Can you please explain bit more ?? why did we need to add 66 to 330 ?
