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- A hospital uses a mixture of salt and water at Rs.
Question 1:
A hospital uses a mixture of salt and water at Rs. 7.62/litre. This mixture contains 5 % salt. Another mixture containing 75 % water costs Rs. 7.82/litre. How much does the patient pay if he buys 5 litres of mixture containing 18% salt? A. Rs. 83.75
B. Rs. 73.85
C. Rs. 37.85
D. Rs. 38.75
Feedback 1st mixture contains 5 % salt. 2nd mixture contains 75 % water i.e. 25 % salt.
Required % of salt = 18 %. ? Required ratio = 25 – 18 : 18 – 5 = 7 : 13 and equired price of the mixture = 7.82 – x : x – 7.62 = 7 : 13 ? x = 7.75/ liter.
Hence price of 5 liters of this mixture = 7.75 x 5 = Rs. 38.75.
Required % of salt = 18 %. ? Required ratio = 25 – 18 : 18 – 5 = 7 : 13 and equired price of the mixture = 7.82 – x : x – 7.62 = 7 : 13 ? x = 7.75/ liter.
Hence price of 5 liters of this mixture = 7.75 x 5 = Rs. 38.75.
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