A 260 m long train running at the speed of 120 km/hr crosses another train running in opposite direction at the speed of 80 km/hr in 9 sec. What is the length of the other train ? Choose the most appropriate option.
A) 240 mts B) 270 mts C) 260 mts D) 250 mts E) None of these
Explanation:   Relative speed = 120 + 80= 
<gadget id="calculator">120 + 80</gadget>
<output>200</output>
200 km/hr.= 200 x 5/18 = 500/9 m/sec.   Let the length of the other train be L mts.   Then, (L + 260)/9 = 500/9 =&gt; L = 240 mts.   240 mtsNSWER IS 240 mts
<result>A</result>
A 260 m long train running at the speed of 120 km/hr crosses another train running in opposite direction at the speed of 80 km/hr in 9 sec. What is the length of the other train ?