Question
55 litres of a solution contains alcohol and water in
the ratio 2:3. Water is added in the solution. The new mixture has a ratio of alcohol and water as 1:5. Find the quantity of water added.Solution
Let initial quantity of alcohol and water be 2x and 3x. ⇒  2x + 3x = 55 ⇒  5x = 55 ⇒  x = 11 Initial quantity of alcohol = 2x ⇒  22 litres Initial quantity of water = 3x ⇒  33 litres Let the water to be added be x litres. 22/(33 + x) = 1/5 ⇒  110 = 33 + x ⇒  77 = x Therefore, quantity of water added is 77 litres.
3.01√726 + 19.956% of 881.0954 + 25.08% of 2200.96 = ?
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
What approximate value should come in the place of (?) in the following questions?
...
(8160.42 ÷ 33.73) + 309.79 + ? = 30.2 * 81.84156.76 + 14.08² + ?³ = √625.12 * 26.87
The ratio between the number of books and pencils is 7:6 and the ratio of cost of per book and pencil is 3:2 then find the percentage by which total cos...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exactvalue.)
[34.01 × 18.98 – 12 × √576.03 – 198] ÷ 3.95 = ?
(23.99)2 – (17.99)2 + (1378.88 + 44.88) ÷ ? = 607.998
What approximate value should replace the question mark?
9.96% of 1200.10 − 25% of 4800 = ? − 7000.20
124% of 620.99 + 11.65% of 1279.23 = ?
Relevant for Exams:
