Question
A company has two machines: Machine A and Machine B.
Machine A was bought for 75,000, and Machine B for 50,000. If the value of Machine A depreciates by 20% and the value of Machine B appreciates by 15%, what is the difference between the new values of Machine A and Machine B?Solution
Original cost of Machine A = 75,000 Original cost of Machine B = 50,000 Value of Machine A after 20% depreciation = 80% of 75,000 = 60,000 Value of Machine B after 15% appreciation = 115% of 50,000 = 57,500 Required difference = 60,000 - 57,500 = 2,500
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