Question
A bag contains coins of ₹1, ₹2, and ₹5
denominations in the ratio 3:2:1. If the total amount in the bag is ₹240, find the number of ₹2 coins.Solution
Let the number of ₹1, ₹2, and ₹5 coins be 3x, 2x, and x respectively. Total amount = 3x × 1 + 2x × 2 + x × 5 = 3x + 4x + 5x = 12x. 12x = 240; x = 20. Number of ₹2 coins = 2x = 2 × 20 = 40. Answer: b) 40
A-5, A, 35, 52, 78, 115
30, 42, 48, 54, 65, 81, 126
- Find the wrong number in the given number series.
25, 34, 18, 34, 9, 46 Find the wrong number in the given number series.
32, 48, 72, 108, 162, 245
Find the wrong number in the given number series.
1600, 800, 1200, 400, 100 , 12.5
547, 594, 640, 691, 741, 792
Find the wrong number in the given number series.
26, 38, 60, 110, 206, 398
75, 450, 225, 1330, 675, 4050
Find the wrong number in the given number series.
8, 12, 23, 40, 66, 103
62, 79, 98, 119, 142, 165