10:47 4 track. Maria's train can go around
the track in 10 seconds. Alma's
train can go around the track in 12
seconds. David wonders, if the
trains start at the same time, how
many seconds will it take for both
trains to cross the finish line
together for the first time?
PART A
Complete the explanation for how
David can answer his question.
Use words and phrases from the
parenthesis to fill in the blanks.
(Greatest common factor, least,
multiples, factors, least common
multiple, greatest)
David needs to find the
of 10 and 12. To find this, he
could list
of both 10 and 12 and circle
each number that appears in both
lists. He should then identify the
number that is circled in both
lists,