The speed of three cars is in the ratio of 3 : 4 : 5. The ratio of the times taken by these cars to travel the same distance is-

Question: The speed of three cars is in the ratio of 3 : 4 : 5. The ratio of the times taken by these cars to travel the same distance is-

Solution:
যেহেতু দূরত্ব একই থাকে, তাই গতিবেগ সময়ের সাথে ব্যস্তানুপাতিক হয়।
⇒ গতিবেগ ∝ (1/সময়)
⇒ s ∝ (1/t)

∴ সময়ের অনুপাত = 1/3 : 1/4 : 1/5
= (1/3 × 60) : (1/4 × 60) : (1/5 × 60)
= 20 : 15 : 12