two trains are moving in opposite directions with speed of 60 km / hr and 90 km / hr respectively. their lengths are 1.10 km and 0.9 km respectively. the slower train cross the faster train in - - - seconds Choose the correct choice from the following: A) 40 B) 42 C) 44 D) 46 E) 48
<gadget id="calculator">1.1 + 0.9</gadget>
<output>2</output>

<gadget id="calculator">60 + 90</gadget>
<output>150</output>

<gadget id="calculator">2 / 150</gadget>
<output>1/75 = around 0.013333</output>

<gadget id="calculator">(1/75) * 3_600</gadget>
<output>48</output>

<result>E</result>
two trains are moving in opposite directions with speed of 60 km / hr and 90 km / hr respectively. their lengths are 1.10 km and 0.9 km respectively. the slower train cross the faster train in - - - seconds
multiply(divide(add(1.10, 0.9), add(60, 90)), const_3600)
"relative speed = 60 + 90 = 150 km / hr ( since both trains are moving in opposite directions ) total distance = 1.1 + . 9 = 2 km time = 2 / 150 hr = 1 / / 75 hr = 3600 / 75 seconds = 1200 / 25 = 240 / 5 = 48 seconds answer is e ."