Question

Four friends A, B, C and D need to cross a bridge.

A maximum of 2 people can cross at a time.

It is night and they have just one lamp.

People that cross the bridge must carry the lamp to see the way.

A pair must walk together at the speed of slower person.

Speeds of
A: 1 minute to cross bridge,
B: 2 minutes to cross bridge,
C: 8 minutes to cross bridge,
D: 11 minutes to cross bridge.

Now the question is… *“What is the minimum total time required by all 4 friends to cross the bridge….?*

Answer 1

Answer: It is D As I think I hope it helps You

Explanation:

Answer 2

Answer:

Option D is the answer

HOPE IT HELPED YOU!!!!!!!