a 240 meter long train running at the speed of 120 kmph crosses another train running in the opposite direction at the speed of 80 kmph in 9 seconds. what is the lenght of other train. Choose the most appropriate option
A) 260 m
B) 220 m
C) 230 m
D) 240 m
E) 250 m
<gadget id="calculator">120 + 80</gadget>
<output>200</output>

<gadget id="calculator">10 / 36</gadget>
<output>5/18 = around 0.277778</output>

<gadget id="calculator">200 * (5/18)</gadget>
<output>500/9 = around 55.555556</output>

<gadget id="calculator">9 * (500/9)</gadget>
<output>500</output>

<gadget id="calculator">500 - 240</gadget>
<output>260</output>

<result>A</result>
a 240 meter long train running at the speed of 120 kmph crosses another train running in the opposite direction at the speed of 80 kmph in 9 seconds. what is the lenght of other train.
subtract(multiply(9, multiply(add(120, 80), const_0_2778)), 240)
"relative speeds = ( 120 + 80 ) km / hr = 200 km / hr = ( 200 * 5 / 18 ) m / s = ( 500 / 9 ) m / s let length of train be xm x + 240 / 9 = 500 / 9 x = 260 ans is 260 m answer : a"