25 outlets working 6 hours a day, can empty a reservoir in 10 days. If only 15 outlets are operational and work for 4 hours a day, in how many days the reservoir can be emptied?
Answer with explanationAnswer: Option C
Apply formula used in work and time problems; M1D1T1W2 = M2D2T2W1
M1= 25 outlets, D1=10 days, T1= 6 hours/day, W2 = to fill the reservoir
M2= 15 outlets, D2=? T2 = 4 hours/day, W1= to fill the reservoir
So we have; M1D1T1= M2D2T2
1500 = 60 * D2
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