Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?
Next door to me live 4 brothers of different heights.
Their average height is 74 inches , and the difference among the heights of first three men is two inches. The difference between the third and fourth man is 6 inches.
Can you tell how tall is each brother?
Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?
Next door to me live 4 brothers of different heights.
Their average height is 74 inches , and the difference among the heights of first three men is two inches. The difference between the third and fourth man is 6 inches.
Can you tell how tall is each brother?
Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?
Next door to me live 4 brothers of different heights.
Their average height is 74 inches , and the difference among the heights of first three men is two inches. The difference between the third and fourth man is 6 inches.
Can you tell how tall is each brother?
