Question
In an alloy of three metals, ratio of the quantity of
gold, silver and platinum is 5:6:4, respectively. If total quantity of silver and platinum together is 270 kg then find the difference between the quantity of silver and gold.Solution
Let the quantity of gold, silver and platinum be ‘5x’ kg, ‘6x’ kg and ‘4x’ kg, respectively. Total quantity of silver and platinum together = 270 kg 6x + 4x = 270 Or, x = 27 Difference between the quantity of silver and gold = {(6 – 5) × 27} = 27 kg
What will come in place of the question mark (?) in the following series?
1528, 1416, 1204, ?, 480, -32
143 Â Â Â Â 119Â Â Â Â 107Â Â Â Â 101Â Â Â Â Â 98Â Â Â Â ?
96 89 ? 90 94 91
...What value should come in the place of (?) in the following number series?
19, 235, 260, 324, 333, ?
What will come in place of the question mark (?) in the following series?
305...
In each of the following number series, one term is missing. Find the missing term.
3, 5, 20, 24, 144, 150, ?
1029, 1030, 1039, 1064, ?, 1194
75, 80, 95, ?, 155, 200
What will come in place of the question mark (?) in the following series?
1515, 184, ?, 455, 967, 624
7 29 61 ? 211 349
...
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