Tiffany went to the cookery class once every 4 days while Barbara went to the same cookery class once every 3 days. They became friends after meeting each other at the cookery class on a Thursday. Which would be the next earliest day that they would meet each other again at the cookery class? Give the answer in number. (Eg Mon = 1; Tue = 2)
Multiples of 4: 0, 4, 8, 12, 16, 20, 24
Multiples of 3: 0, 3, 6, 9, 12, 15, 18, 21, 24
Lowest common multiple of 4 and 3: 12
Number of weeks in 12 days
= 12 ÷ 7
= 1 r 5
By looking at the remainder, we count 1 week and 5 days from Thursday is a (2) Tuesday.
Answer(s): 2