Question
The cost price of 12 articles is equal to the selling
price of 9 articles while the discount (D) on 10 articles is equal to the profit (P) on 5 articles. Find the difference between profit % and discount %.Solution
12×CP =9×SP CP/SP=3/4 Profit =1 Profit percentage = (1/3) ×100=33.33% 
Percentage of (D)= (0.5/4.5) ×100 =11.11% P% -D% =33.33% -11.11% =22.22%.
864, 432, 144, ? , 7.2, 1.2
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, ?
161Â Â Â Â 173Â Â Â Â Â Â 191 Â Â Â Â Â Â 215Â Â Â Â Â Â 245 Â Â Â Â Â Â ?
...What will come in place of the question mark (?) in the following series?
10, 11, 15, 31, 95, ?
What will come in place of (?) question mark in the given number series.
13, 15, 18, 23, 30, ?
What will come in place of the question mark (?) in the following series?
16, 16, ?, 96, 384, 1920
14.8% of 7200 – 16.4% of 6200 + 15.09% of 8100 = 10% of ?
3, 10, 29, 66, ?
?, 32, 75, 144, 245, 384
7, 8, ?, 52, 209, 1046
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