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ATQ, Let the cost price of the two articles be Rs. x and Rs. y respectively. Selling price of the first article = 0.90 × x = Rs. 0.90x Selling price of the other article = 1.10 × y = Rs. 1.10y According to the question, 0.90x = 1.10y x/y = 1.10/0.90 = 11/9 Desired difference = (11 – 9)/20 × 540 = 0.10 × 540 = Rs. 54
15, 120, 840, 5040, ?, 100800
11 22.5 47 102 236 ?
...What will come in place of the question mark (?) in the following series?
2.5, 6.5, 18.5, 54.5, 162.5, 486.5, ?
140, 146, 158, 176, ?, 230
17 18 14 ? 7 32
...10, 10, 30, 150, ?, 9450
17, 19, 41, 127, 513, ?
116, 118, 124, 136, 156, ?
-1, 5, 23, 59, ?
84, 97, ?, 162, 214, 279
