the distance between two cities a and b is 330 km. a train starts from a at 8 a. m. and travels towards b at 60 km / hr. another train starts from b at 9 a. m. and travels towards a at 75 km / hr. at what time do they meet?  Answers:
A) 12
B) 10
C) 11
D) 09
E) 03
<gadget id="calculator">330 + 75</gadget>
<output>405</output>

<gadget id="calculator">60 + 75</gadget>
<output>135</output>

<gadget id="calculator">405 / 135</gadget>
<output>3</output>

<gadget id="calculator">3 + 8</gadget>
<output>11</output>

<result>C</result>
the distance between two cities a and b is 330 km. a train starts from a at 8 a. m. and travels towards b at 60 km / hr. another train starts from b at 9 a. m. and travels towards a at 75 km / hr. at what time do they meet?
add(divide(add(330, 75), add(60, 75)), 8)
"suppose they meet x hrs after 8 a . m . then , ( distance moved by first in x hrs ) + [ distance moved by second in ( x - 1 ) hrs ] = 330 60 x + 75 ( x - 1 ) = 330 = > x = 3 so , they meet at ( 8 + 3 ) i . e . , 11 a . m . answer : c"