A patient was given four pills which he is required to take one after every thirty-five minutes.
How long can the pills run for him? Choices:  A) 1 hour and 30 minutes  B) 1 hour and 20 minutes  C) 1 hour and 45 minutes  D) 1 hour and 15 minutes  E) 1 hour and 42 minutes
He took the first pill at the zero minute.   He took the second pill after 20 minutes = 0+35= 
<gadget id="calculator">0+35</gadget>
<output>35</output>
35   He took the third pill after 20 minutes= 35+35= 
<gadget id="calculator">35+35</gadget>
<output>70</output>
70   He took the fourth pill after 20 minutes= 70+35= 
<gadget id="calculator">70+35</gadget>
<output>105</output>
105   Then it will last for 105 minutes or an hour and 45 minutes.   Answer 1 hour and 45 minutes
<result>C</result>
A patient was given four pills which he is required to take one after every thirty-five minutes.
How long can the pills run for him?