In a mixture, the initial quantity of milk and water is 11:12 respectively. If (z-14) and ‘z’ litres of milk and water are added respectively in the mixture, then the new ratio of milk and water will be 7:9. Find out the value of ‘z’. It is assumed that the initial quantity of water in the mixture is 72 litres.
In a mixture, the initial quantity of milk and water is 11:12 respectively. It is assumed that the initial quantity of water in the mixture is 72 litres. initial quantity of milk in the mixture = (72/12)x11 = 66 litres If (z-14) and ‘z’ litres of milk and water are added respectively in the mixture, then the new ratio of milk and water will be 7:9. [66+(z-14)]/[72+z] = 7/9 [z+52]/[72+z] = 7/9 9z+468 = 504+7z 9z-7z = 504-468 2z = 36 Value of ‘z’ = 18
25% of 60 × 15% of 120 = 30% of (?)
262 × 15 + (?)² = 4099
20% of 550 × 25% of 80 = ?2 × 22
(15 × 225) ÷ (45 × 5) + 480 = ? + 25% of 1240
Ravi is 12 years younger than Surya. Ravi's age is 40% of the sum of his and Surya's age. What will be Surya's age 9 years hence?
115 ÷ 23 + 12 × 6 = ? + 16 - 35
3.55 + 1.05 + 2.5 × 13 – 12% of 12.5 = ?
120% of 400 + ?% of 520 = 1000
432 ÷ ? × 2552 ÷ 44 = 2088