Both Robert and Alice leave from the same location at 7:00 a.m. driving in the same direction, but in separate cars. Robert drives 40 miles per hour while Alice drives 60 miles per hour. After 6 hours, Alice’s car stops. At what time will Robert’s car reach Alice’s car?  Choose the correct choice from the following options
A) 1 p.m.	B) 3 p.m.	C) 4 p.m.	D) 8 p.m.	E) 9 p.m.
7:00 am so 6 hours later is 1:00 pm   In six hours, Robert will have driven  6*40= 
<gadget id="calculator"> 6*40</gadget>
<output>240</output>
240 miles   In six hours, Alive will have driven 6*60= 
<gadget id="calculator">6*60</gadget>
<output>360</output>
360 miles   So Robert needs  360-240= 
<gadget id="calculator"> 360-240</gadget>
<output>120</output>
120 miles do catch Alice up.   So at 40 mph, he will need 3 hours   1:00 pm + 3 hours= 4:00 pm   ANS : 4 p.m.
<result>C</result>
Both Robert and Alice leave from the same location at 7:00 a.m. driving in the same direction, but in separate cars. Robert drives 40 miles per hour while Alice drives 60 miles per hour. After 6 hours, Alice’s car stops. At what time will Robert’s car reach Alice’s car?