a 750 m long train crosses a platform in 39 sec while it crosses a signal pole in 18 sec. what is the length of the platform? Choose the correct answer
A) 300 B) 875 C) 360 D) 770 E) 380
<gadget id="calculator">750 / 18</gadget>
<output>125/3 = around 41.666667</output>

<gadget id="calculator">(125/3) * 39</gadget>
<output>1_625</output>

<gadget id="calculator">1_625 - 750</gadget>
<output>875</output>

<result>B</result>
a 750 m long train crosses a platform in 39 sec while it crosses a signal pole in 18 sec. what is the length of the platform?
subtract(multiply(speed(750, 18), 39), 750)
"speed = 750 / 18 = 125 / 3 m / sec . let the length of the platform be x meters . then , ( x + 750 ) / 39 = 125 / 3 = > x = 1625 m . l = 1625 - 750 = 875 answer : option b"