Question
When the price of apples is decreased by 30%, a customer
is able to purchase 5 additional apples with Rs. 140. Determine the original price per apple.Solution
Let the previous price of apple be Rs. '10x' per piece So, new price of the apple = '10x' X 0.7 = Rs. '7x' ATQ: (140/7x) - (140/10x) = 5 or, (20/x) - (14/x) = 5 or, 6/x = 5 or, 5x = 6 x = 1.2 So, previous price of apples = 10 X 1.2 = Rs. 12 per pieceÂ
2, 9, 19, 32, 48, 67, ?
64Â Â Â 48Â Â Â 36Â Â Â 22Â Â Â Â 16Â Â Â Â 8
?     190      210      238      274     318
...40 41 86 ? 1084 5445
...148, ‘?’ , 15 4 , 17 8 , 23 8 , 35 8 , 56 8
31   48    67    90   ?      150
22, 23, 31, 57, 122, 247
1. In series II, if ‘x’ is the right term, then find which of the following statement(s) are true.
I. x/124 is a factor 6 and 8.
6Â Â Â Â Â Â Â Â Â Â 5Â Â Â Â Â Â Â Â Â Â 40Â Â Â Â Â Â Â Â Â Â Â 32Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 249Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 240
203, 223, 198, 218, ?, 213
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