Three brothers joined the army on the same day. Alf comes home once every 5 days, Sid comes home once every 4 days and Jim comes home once every 11 days. How often will all three meet up together?

Question

Three brothers joined the army on the same day. Alf comes home once every 5 days, Sid comes home once every 4 days and Jim comes home once every 11 days. How often will all three meet up together?

A. 200

B. 194

C. 220

D. 190

Answer: C

Solution:

= ( 5 x 4 x 11)

Once every 220 days