There are 240 doctors and nurses at a hospital. If the ratio of doctors to nurses is 5 to 7, how many nurses are at the hospital?
Solution
Correct Answer: Option D
Let number of doctors= 5x and number of nurses = 7x Total number of doctors and nurses = 240 5x+7x = 240 =>12x =240 => x =20 Number of nurses =7x =7X20 = 140
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