A man traveled a distance of 61 km in 9 hours. He traveled partly on foot at 4 km/hr and partly on bicycle at 9 km/hr. What is the distance (in km) traveled on foot?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
3 (16)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
Let the time in which he travelled on foot = x hr.
Then the time in which he travelled on bicycle = (9 - x) hr.
Now
⇒ 4x + 9(9 - x) = 61
⇒ 4x + 81 - 9x = 61
⇒ 5x = 20
⇒ x = 4
∴ Distance travelled on foot = 4x
⇒ 4 × 4
= 16 km
∴ The distance travelled on foot is 16 Km.
