a bus 75 m long is running with a speed of 21 km / hr. in what time will it pass a woman who is walking at 3 km / hr in the direction opposite to that in which the bus is going?	Choose the most appropriate option
A) 5.75	B) 7.62	C) 11.25	D) 4.25	E) 3.25
<gadget id="calculator">75 * 3_600</gadget>
<output>270_000</output>

<gadget id="calculator">21 + 3</gadget>
<output>24</output>

<gadget id="calculator">270_000 / 24</gadget>
<output>11_250</output>

<gadget id="calculator">11_250 / 1_000</gadget>
<output>45/4 = around 11.25</output>

<result>C</result>
a bus 75 m long is running with a speed of 21 km / hr. in what time will it pass a woman who is walking at 3 km / hr in the direction opposite to that in which the bus is going?
divide(divide(multiply(75, const_3600), add(21, 3)), const_1000)
"speed of bus relative to woman = 21 + 3 = 24 km / hr . = 24 * 5 / 18 = 20 / 3 m / sec . time taken to pass the woman = 75 * 3 / 20 = 11.25 sec . answer : c"