Amita, Suneha and

To find the earliest (least) time, they will start preparing a new card together, we find the LCM of 10, 16 and 20.

10 = 2× 5, 16 = 2⁴

20 = 2² × 5

LCM = 2⁴ × 5 = 16 × 5 = 80 minutes.

They will start preparing a new card together after 80 minutes.

Tagging |||Maths||Real Numbers||The Fundamental Theorem of Arithmetic