a technician makes a round - trip to and from a certain service center by the same route. if the technician completes the drive to the center and then completes 80 percent of the drive from the center, what percent of the round - trip has the technician completed?
Choose the correct choice from the following:
A) 50
B) 60
C) 70
D) 80
E) 90
<gadget id="calculator">100 / 2</gadget>
<output>50</output>

<gadget id="calculator">80 * 50</gadget>
<output>4_000</output>

<gadget id="calculator">4_000 / 100</gadget>
<output>40</output>

<gadget id="calculator">50 + 40</gadget>
<output>90</output>

<result>E</result>
a technician makes a round - trip to and from a certain service center by the same route. if the technician completes the drive to the center and then completes 80 percent of the drive from the center, what percent of the round - trip has the technician completed?
add(divide(const_100, const_2), divide(multiply(80, divide(const_100, const_2)), const_100))
"round trip means 2 trips i . e . to and fro . he has completed one i . e 50 % completed . then he traveled another 80 % of 50 % i . e 40 % . so he completed 50 + 40 = 90 % of total trip . e"