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
128, 132, 123, 139, 113, 150
324, 385, 460, 549, 651, 769
Find the wrong number in the given number series.
3, 8, 18, 40, 78, 158- Find the wrong number in the given number series.
6, 12, 36, 108, 540, 3240 - Find the wrong number in the given number series.
2, 6, 14, 30, 62, 126 20, 95, 220, 275, 620, 895
14, 16, 22, 46, 172, 886
119, 200, 137, 182, 156, 164
1320, 1352, 1390, 1436, 1488, 1548
- In the given number series, find the wrong number.
4, 9, 19, 39, 79, 159, 319