the true distance between the 2 stations! দুটি স্টেশন সঠিক দূরত্ব ! drawn to a scale 50 m to cm 1 !

On a map drawn to a scale of 50 M to 1 CM , a surveyor measured the distance between two stations as 3,500 m. but it was found that by mistake, he had used a scale of 100 M to 2 CM . Find the true distance between the stations

[@Poovarasan18]

Thanks