A tank has oxygen for 72 patients and can last for 54 hours for them. – McqOptions

MCQOPTIONS

1.	A tank has oxygen for 72 patients and can last for 54 hours for them. If patients reduce their oxygen consumption by 10%, then 90 patients can use this oxygen supply for how many hours?
A.	24 hours
B.	48 hours
C.	36 hours
D.	42 hours
Answer» C. 36 hours

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