Question

Kannu made a necklace of 17 sea-shells. How many such necklaces can be made using 100 sea-shells?

Answer 1

There are 100 sea shells and 17 sea shells are required to make one necklace. So,

Sea shells left after making 1 necklace = 100 – 17 = 83

Sea shells left after making 2 (second) necklace=83-17 =66

Sea shells left after making 3 (third) necklace =66-17 =49

Sea shells left after making 4 (fourth) necklace= 49 – 17 = 32

Sea shells left after making 5 (fifth) necklace = 32 – 17 = 15 .

15 sea shells left after making of 5 necklaces.

So, only 5 necklaces can be made using 100 sea-shells. And after making necklaces 15 sea-shells will be left unused.