Question

Planets A, B and C orbit a certain star once every 3, 7, and 18 months respectively. If the three planets are now in the same straight line, what is the smallest number of months that must pass before they line up again?

Answer 1

The least common multiple is 126.

Answer 2

thank you but it is not on my answer choice

Answer 3

What are your answer choices?

Answer 4

the answer choises are a)20 1/5 b)21 c)20 5/25 d)22

Answer 5

plese help i am good at math but i really don't get this i would appreciate if you can help me

Answer 6

r u there