Of the four friends Anna, Berta, Carla and Doris, Anna goes every third evening in the restaurant

Question

Of the four friends Anna, Berta, Carla and Doris, Anna goes every third evening

in the restaurant "Edelweiss", Berta every fourth, Carla every fifth and Doris every eighth

Eve.

a) When once again all four sat together, they considered when they next time

again, all four would be together. After how many days will that be?

b) Two days after all four sat together, her friend Emily went to the "Edelweiss"

and decided to repeat this every seventh day in the future. After how many days

after Emily's decision, all five will be together for the first time?

Answer A. 120 B.238

Answer 1

LCM least common multiple of 3,4,5 and 8 is in fact 120