If the bus had traveled 60 kmh faster than it actually did, the trip of 120 km would have lasted 1 hour less. Find the speed of the bus.
Choose the correct choice from the following choices:
A) 55 kmh
B) 30 kmh
C) 80 kmh
D) 60 kmh
E) 75 kmh
Time = Distance/Speed   Difference in time = 1 hr   120/x - 120/(x + 60) = 1   Substitute the value of x from the options. --&gt; x = 60 --&gt; 120/60 - 120/120 = 2 - 1= 
<gadget id="calculator">2 - 1</gadget>
<output>1</output>
1   Answer: 60 kmh
<result>D</result>
If the bus had traveled 60 kmh faster than it actually did, the trip of 120 km would have lasted 1 hour less. Find the speed of the bus.