John, Karen and Luke collected cans of vegetable of a food drive. The number of cans that John collected was 1/2 the number of cans that Karen collected and 1/3 the number of cans that Luke collected. The number of cans that Luke collected was what fraction of the total number of cans that John, Karen and Luke collected?

(A) 1/5

(B) 1/3

(C) 2/5

(D) 1/2

(E) 2/3

Hi Guys ,

I came across the following question in SET 31 and couldnt solve it. Any guidance will be appreaciated.

I tried solving it but wasnt able to.

If anyone can give solution with explanation it will be nice.

Thanks...