Two trains start at the same time from Dhaka and Rangpur and proceed towards each other at 80 kmph and 95 kmph respectively. When they meet, it is found that one train has travelled 30 km more than the other. Find the distance between Dhaka and Rangpur.

Question: Two trains start at the same time from Dhaka and Rangpur and proceed towards each other at 80 kmph and 95 kmph respectively. When they meet, it is found that one train has travelled 30 km more than the other. Find the distance between Dhaka and Rangpur.

Solution:
ধরি, তারা t সময় পরে মিলিত হয়।

প্রুশ্নমতে,
(95t) = (80t) + 30
⇒ (95t) - (80t) = 30
⇒ 15t = 30
∴ t = 2 hr

ঢাকা ও রংপুরের দূরত্ব = (95 × 2) + (80 × 2)
= 190 + 160
= 350 km