a start walking from a place at a uniform speed of 6 kmph in a particular direction. after half an hour, b starts from the same place and walks in the same direction as a at a uniform speed and overtakes a after 1 hour 48 minutes. find the speed of b. Choose the correct choice from the following choices
A) 4.7 kmph B) 6.6 kmph C) 4 kmph D) 7 kmph E) 5.3 kmph
<gadget id="calculator">60 + 48</gadget>
<output>108</output>

<gadget id="calculator">108 / 60</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">1 / (9/5)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(5/9) + 6</gadget>
<output>59/9 = around 6.555556</output>

<result>B</result>
a start walking from a place at a uniform speed of 6 kmph in a particular direction. after half an hour, b starts from the same place and walks in the same direction as a at a uniform speed and overtakes a after 1 hour 48 minutes. find the speed of b.
add(divide(1, divide(add(const_60, 48), const_60)), 6)
"distance covered by a in 30 min = 1 km b covers extra 1 km in 1 hour 48 minutes ( 9 / 5 hr ) i . e . relative speed of b over a = 1 / ( 9 / 5 ) = 5 / 9 so the speed of b = speed of a + 5 / 9 = 6 + 5 / 9 = 6.55 answer b"