Problema Solution
a student has a science test every 10 days, a math test every 12 days, an English test every 20 days, and a social studies test every 18 days. How often will the student have a test in all four subjects on the same day?
Answer provided by our tutors
We need to find the least common measure for 10, 12, 20 and 18
LCM(10, 12, 20, 18) = 180
Every 180 days the students will have a test in all four subject in the same day.