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Quantity of milk in 190 ml of mixture = 190 × 10/(10 + x) Quantity of water in 190 ml of mixture = 190 × x/(x + 10) According to question; {1900/(10 + x) + 40}/{190x/(x + 10) + 30} = 2/1 Or, 1900/(10 + x) + 40 = 380x/(x + 18) + 60 Or, (1900 – 380x)/(x + 10) = 20 Or, 1900 – 380x = 20x + 200 Or, 400x = 1700 Or, x = 4.25
Present average age of A, B, and C is 30 years. If 5 years ago, the average age of A and C was 25 years, then find the present age of B.
Four years ago, the age of 'P' was 25% less than the current age of 'Q'. 9 years ago, the average age of 'Q' and 'R' was 25 years. To find the current a...
The present age of Arvind is three times of Sanjay. 6 years hence the age of Arvind will become 5 years more than 2 times the age of Sanjay. The present...
The ratio of age of Rahul 7 years ago to the age of Neha 7 years hence is 3:4. If the average of their present ages is 35 years, what is the difference ...
7 years ago, the ratio of the ages of Pia and Qasim was 9:7. The present age of Tom is 20 years more than one-seventh of Qasim’s present age. Find Tom...
The ages of A, B and C together are 42 years. B is twice as old as A and C is 2 years older than A. What is the difference between ages of B and C?
The sum of ages of organization members (including clerk and managers) is 380 years. The total ages of clerks and managers are in the ratio 1:3 and the ...
Sum of the present ages of A, B, C and D is 65 years. After 3 years ratio of their ages is 4:3:2:2. What is C’s present age?
The average age of 'p' employees in an office is (p - 8) years. When two managers aged 56 years and 40 years join the office, the average age of all ind...
