Home
Class 14
MATHS
A and B are 20 km apart. A can walk at a...

A and B are 20 km apart. A can walk at an average speed of 4 km/hour and B at 6 km/hr. If they start walking towards each other at 7 a.m., when they will meet ?

A

1) प्रात: 8.00 बजे

B

2) प्रात: 8.30 बजे

C

प्रात: 9.00 बजे

D

प्रातः 10.00 बजे

Text Solution

Verified by Experts

The correct Answer is:
C
सापेक्ष गति = (4 + 6) km/h
= 10 km/h
समय = `(20)/(10)=2` hour
अत: दोनों प्रात: 9.00 बजे मिलेंगे।
Promotional Banner

Similar Questions

Explore conceptually related problems

Rohit and Dinesh are 64 km apart. Rohit can walk at a speed of 15 km/hr and Dinesh at the speed of 17 km/hr. In how many hours will they meet if they are travelling towards each other?

Two cars X and Y start from places A and B respectively which are 700 km apart at 9 a.m. Both the cars run at an average speed of 60 km/hr. Car X at stops 10 a.m. and again starts at 11 a.m. while the other car continues to run without stopping. The two cars cross each other at 2: 40 pdotmdot b. 3: 20 pdotmdot c. 4: 10 pdotmdot d. 4: 20 pdotmdot

Two person start walking at 7:30 am in opposite direction at the rate of 4 km/hr and 6 km/hr respectively. If the distance between them is 25 km, when will they meet together?

A man at a speed of 6 km/hr for 1 km and 8 km/hr for the next 1 km. What is t his average speed for the walk of 2 km?

The distance between two cities A and B is 330 km. A tain starts from A at 8 a.m. and travels towards B at 60 km/hr. Another train starts from B at 9 a.m. and travels towards A at 75 km/hr. At what time do they meet?