Question

133. One litre of spirit which contains 10% of
water is added to 3 litres of spirit containing 7% of
water and to this mixture half a litre is added. Find
the percentage of water in the final mixture,
(A) 15%
(B) 18%
(C) 20%
(D) 22%​

Answer 1

Answer:

B) 18 percent

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Step-by-step explanation:

One litre of sprite which contain 10% of water ( 0.1 ltr) is added to 3 litres of sprite which contain 7% of water ( 0.21 ltr)and to this mixture half a litre of water(0.5 ltr)is added. Total water in 4.5 ltr mixture = 0.81 ltr

% age of water in mixture = 100*0.81/45 = 18%