Question

a train travelling at a speed of x km/h crossed a 200 m long platform in 30.sec and overtook a man walking in the same direction at the speed of 6 km/h in 20 sec. what is the value of x​

Answer 1

Answer:

Hope you get the correct answer.

Answer 2

Step-by-step explanation:

Total distance, covered by train in 30 sec. with, speed of 60 km/hr

Distance =60kmph×30sec" role="presentation" style="box-sizing: border-box; display: inline; font-style: normal; font-weight: 400; line-height: normal; font-size: 15px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: 0px; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(55, 71, 79); font-family: Roboto, sans-serif; font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; background-color: rgb(238, 242, 246); text-decoration-style: initial; text-decoration-color: initial; position: relative;">60kmph×30sec60kmph×30sec

=60×518m/s×30sec" role="presentation" style="box-sizing: border-box; display: inline; font-style: normal; font-weight: 400; line-height: normal; font-size: 15px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: 0px; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(55, 71, 79); font-family: Roboto, sans-serif; font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; background-color: rgb(238, 242, 246); text-decoration-style: initial; text-decoration-color: initial; position: relative;">60×518m/s×30sec60×518m/s×30sec

= 500 metres

Distance of train +length of plateform" role="presentation" style="box-sizing: border-box; display: inline; font-style: normal; font-weight: 400; line-height: normal; font-size: 15px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: 0px; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(55, 71, 79); font-family: Roboto, sans-serif; font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; background-color: rgb(238, 242, 246); text-decoration-style: initial; text-decoration-color: initial; position: relative;">Distance of train +length of plateformDistance of train +length of plateform = 500 m

200+plateform" role="presentation" style="box-sizing: border-box; display: inline; font-style: normal; font-weight: 400; line-height: normal; font-size: 15px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: 0px; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(55, 71, 79); font-family: Roboto, sans-serif; font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; background-color: rgb(238, 242, 246); text-decoration-style: initial; text-decoration-color: initial; position: relative;">200+plateform200+plateform = 500

Length of plateform

= 500−200" role="presentation" style="box-sizing: border-box; display: inline; font-style: normal; font-weight: 400; line-height: normal; font-size: 15px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: 0px; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(55, 71, 79); font-family: Roboto, sans-serif; font-