1. S, P, M and E are four persons, working on project efficiency of M is twice that of others and M
works only for half of the total days worked by E. M works 6 hours/day and E works 12
hours/day. Ratio of contribution of work to project of M and E is (i.e., work done by
M work done by
(A) 1 : 1 (B) 1 : 2 (C) 1 : 4 (D) 1 : 3