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Let the total number of pens be '100n'. Let the cost price of a pen be Rs. '10a' So, marked price of a pen = 10a X 1.4 = Rs. '14a' So, the cost price of all pens = 100n X 10a = Rs. '1000na' ATQ, Selling price of 70% of total number of pens = 0.7 X 100n X 14a = Rs. '980na' Selling price of remaining pens = 0.3 X 100n X 10a X 1.4a X 0.8 = Rs. '336na' Total selling price = 980na + 336na = Rs. '1316na' Therefore, required profit = (1316na - 1000na) ÷ 1000na X 100 = 31.6%
24, 12, 18, ?, 157.5, 708.75
Direction: Which of the following will replace ‘?’ in the given question?
2, ‘?’, 46, 136, 311, 605, 1086
462 478 510 558 ?
...108 329 ? 2975 8928 26789 .
104 156 234 ? 526.5 789.75
...24 72 180 360 540 ?
2401 2402 1203 ? 105 26
...The following numbers form a series followed by a (?). Find the odd one out first and then find that what will come in place of the question mark (?) ac...
22 62 178 522 1550 ?
...130 114 106 102 100 ?