car x began traveling at an average speed of 35 miles per hour. after 84 minutes, car y began traveling at an average speed of 42 miles per hour. when both cars had traveled the same distance, both cars stopped. how many miles did car x travel from the time car y began traveling until both cars stopped?  Options
A) 140	B) 175	C) 210	D) 245	E) 270
<gadget id="calculator">84 / 60</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">(7/5) * 35</gadget>
<output>49</output>

<gadget id="calculator">42 - 35</gadget>
<output>7</output>

<gadget id="calculator">49 / 7</gadget>
<output>7</output>

<gadget id="calculator">35 * 7</gadget>
<output>245</output>

<result>D</result>
car x began traveling at an average speed of 35 miles per hour. after 84 minutes, car y began traveling at an average speed of 42 miles per hour. when both cars had traveled the same distance, both cars stopped. how many miles did car x travel from the time car y began traveling until both cars stopped?
multiply(35, divide(multiply(divide(84, const_60), 35), subtract(42, 35)))
in 84 minutes , car x travels 49 miles . car y gains 7 miles each hour , so it takes 7 hours to catch car x . in 7 hours , car x travels 245 miles . the answer is d .