Two lights flash next to each other, one every 6 seconds, the other every 8 seconds. You see them flash at the same time. How many minutes until they flash simultaneously again?
ACT’s coming up Oct 27, 2018 and Dec 8, 2018. SAT’s coming up Oct 6, 2018, Nov 3, 2018, and Dec 1, 2018. Sign your student up for test prep at https://mcgoverntestprep.com/ today!