21
1
1050 1050
LCM(21, 50) = 1050
10:50 to 21:50 is 11 hours. 1050 to 2150 is 1100.
The LCM is 1050.
Both 21 and 50 can be evenly divided into their least common multiple (LCM), which is 1050. This means that 1050 is the smallest number into which both 21 and 50 can fit without leaving a remainder. Additionally, any common multiple of 21 and 50 will also be divisible by both.
1050
0.0286
10 + 40 = 5050 / (5x2) = 50/1050/10 = 5
1050
210
150