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UPSC Civil Services 2015 Prelims General Studies Paper II
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© examsnet.com
Question : 18
Total: 80
In a parking area, the total number of wheels of all the cars (four-wheelers) and scooters/motorbikes (two-wheelers) is 100 more than twice the number of parked vehicles. The number of cars parked is
35
45
50
55
Validate
Solution:
Let number of cars be x
Let number of scooters / motor bikes = y
∴ Total number of parked vehicles = x + y
According to question
4x + 2y = 2 (x + y) + 100
4x + 2y = 2 x + 2y + 100
2x = 100
x = 50
Hence, Number of cars parked is 50.
© examsnet.com
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