180 ml of mixture contains milk and water in the ratio of 15:x respectively. If 55 ml of water and 65 ml of milk is added into it then ratio of milk to water in the resulting mixture will be 2:1. Find the value of ‘x’.Â
Quantity of milk in 180 ml of mixture = 180 × 15/(15 + x) Quantity of water in 180 ml of mixture = 180 × x/(x + 15) According to question; {2700/(15 + x) + 65}/{180x/(x + 15) + 55} = 2/1 Or, 2700/(15 + x) + 65 = 360x/(x + 15) + 110 Or, (2700 – 360x)/(x + 15) = 45 Or, 2700 – 360x = 45x + 675 Or, 405x = 2025 Or, x = 5
9999 6666 ? 2962.66 1975.11 1316. 74
...5 11 32 65 ? 389
...13 22 40 67 103 ?
...24Â Â Â 72Â Â Â Â 180Â Â Â Â 360Â Â Â Â Â 540Â Â Â ?
6 6 13 39 ? 226
...64Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 48Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 36Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â...
6 6 3 6.5 12 33
...2556   636    156    ?    6
D irection: Which of the following will replace ‘?’ in the following series.
543,’?’, 564 ,588, 660
...388, ?, 98, 49, 24, 15
