Question
The price of wheat has increased by 65%. Rohit has
decided to spend only 32% more than what he initially did on buying wheat. What is the percentage decrease in Rohit's wheat consumption?Solution
Let the initial price of Rohit be Rs. 100 per unit and Rohit's consumption be 10 units.  ∴ Initial amount spent = 100 × 10 = Rs. 1,000  New price of wheat = 165% of 100 = Rs. 165 and new total amount spent = 132% of 1000 = Rs. 1,320  ∴  New consumption = 1320/165 = 8 units  ∴ Decrease in consumption = 10 - 8 = 2 unit  ∴ % decrease = 2/10 × 100 = 20%
7, 26, 238, 962, 8522, 34078
12                          13                         30                     �...
14Â Â Â 42Â Â Â Â 105Â Â Â Â 210Â Â Â Â Â 315Â Â Â ?
8      24       48      144      ?     864
...Find sum of first n terms: 2 + 6 + 12 + 20 + 30 + …
6Â Â Â Â Â Â Â Â Â Â Â Â Â Â 3Â Â Â Â Â Â Â Â Â Â Â Â Â Â 24Â Â Â Â Â Â Â Â Â Â Â 218Â Â Â Â Â Â Â Â Â 3486Â Â Â Â Â Â Â 43575
10      �...
Which of the following is true about the relation between the wrong numbers in the following series?
I: 10, 18, 29, 40, 54, 70
II: 15, 24,...
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
4 7 6
15 ? 21
44 68 60
100Â Â Â Â 221Â Â Â Â 77Â Â Â Â 245Â Â Â Â 50Â Â Â 275
22   39    58    81   ?      141
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