Question
A shopkeeper selling an item for Rs.(a + 500), and
suffered a loss of 20%. suppose he sells it for Rs.(2a – 500), he will make a profit of 20%. Find the value of 'a'.Solution
ATQ, CP of the item when there is loss of 20% = [(a + 500) x (5/4)] To make an 20% profit, he has to sell the article for = Rs.[(a + 500) × (5/4) × (12/10)] According to the question, [(a + 500) × (5/4) × (12/10)] = 2a – 500 Or, (a + 500) × 3/2 = (2a – 500) Or, 3a + 1500 = 4a – 1000 Or. a = 2500
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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