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But the duration t can’t be obtained from the fact that they have put 800 gallons together. 800=a*t+b*t=(2b+1)t ( assuming rates per minute for A and B are a and b and a=b+1) . But b is unknown.
If x and y are nonzero integers such that -12≤ x ≤ 1 and -4≤ y ≤10, what is the sum of the minimum and the maximum possible values of x/y?
A. -8 B. -4 C. 0 D. 4 E. 8
hi guys for this question, is there a standard that can be followed? i saw discussions coming up with 12 and -`12 and summing them to get the answer 0. Is there a way to determine how to tackle such questions of there is a slight modification in the question?
A puts 1 gallon extra per minute so therefore to put 100 gallons extra in the end , they have to work together for 100 minutes
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Isnt DS2 - If the work rate of each person is identical, how long it takes for 5 people to complete a job?
(1) The required number of hours for 12 people to complete the job is 7 hours less than that for 5 people to complete the job (2) It takes 6 hours for 3 people to complete the job