Question :
Ravi, Seema, and Raju start preparing cards for all persons in an old age home. They complete one card in 20, 16 and 10 minutes. If all of them started together at the same time, after what time will they start preparing a new card together? Submitted on 3/3/2024 | Answered by Vandana RanaAnswer :
To find the least time, they will start preparing a new card together,we have to find the LCM of 20, 16 and 10.
20 = 2 x 2 × 5
16 = 2 x 2 x 4
10 = 2 × 5
LCM = 16 × 5 = 16 × 5 = 80 minutes
Thus, They will start preparing a new card together after 80 minutes