Question
A shopkeeper marked an article Rs. 900 above its cost
price and sold it after giving a discount of 20% and earned a profit of 25%. Find the cost price of the articleSolution
Let cost price of the article is Rs. 100x So, 1.25 × 100x = 0.8 × (100x + 900) Or, 125x = 80x + 720 Or, 45x = 720 Or, x = 16 Cost price of the article = 100 × 16 = Rs. 1600
In each of the following giving number series, a wrong number is given. Find out the wrong number?
82, 81, 86, 110, 168, 287
5000, 4050, 3240, 2268, 1360.8, 680.4
182, 240, 306, 380, 462, 558
126, 295, 520, 807, 1170, 1611
12, 10, 23, 65, 265, 1289Â
Find the wrong number in the given number series.
148, 146, 140, 128, 108, 68
- Find the wrong number in the series.
2, 3, 7, 15, 31, 63, 127 - 137, 148, 190, 261, 361, 490
- Find the wrong number in the given number series.
5, 8, 12, 19, 27, 39 Find the wrong number in the given number series.
24, 120, 721, 5040, 40320, 362880