Team A can built a project in 4 hours less than the time

Solution

Since Team A is taking less time than Team B and each member has the same efficiency. With this we can say that the strength of Team A will be greater than that of Team B. Thus only (i) and (iii) satisfy the condition (first term is greater than that of second term). Alternative Method:                             Team A     Team B Time:                        T             T+4 Strength:                   A               B Work Done:             AT     =     B(T+4) ؞ Then,  AT = B(T+4) A/B = (T+4)/T Thus, we can say that A > B. Hence only option (i) and (iii) satisfy the condition.