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29 Dec 2016, 12:15
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
58% (02:19) correct
42%
(02:04)
wrong
based on 182
sessions
History
Date
Time
Result
Not Attempted Yet
Two assembly line inspectors, Lauren and Steven, inspect widgets as they come off the assembly line. If Lauren inspects every fifth widget, starting with the fifth, and Steven inspects every third, starting with the third, how many of the 98 widgets produced in the first hour of operation are not inspected by either inspector?
A. 91
B. 59
C. 53
D. 47
E. 45
A. 91
B. 59
C. 53
D. 47
E. 45
29 Dec 2016, 12:44
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multiples of 5 - 19
multiples of 3 - 32
multiples of 15 - 6
98 - 19 - 32 + 6 = 53
Answer C
multiples of 3 - 32
multiples of 15 - 6
98 - 19 - 32 + 6 = 53
Answer C
30 Dec 2016, 11:21
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Bunuel
No of widgets inspected by Lauren is \(\frac{98}{5} = 19\)
No of widgets inspected by Steven is \(\frac{98}{3} = 32\)
No of widgets inspected by Steven & Lauren is \(\frac{98}{15} = 6\)
So, Total No of widgets inspected by Steven & Lauren is 19 + 32 - 6 = 45
So, Total No of widgets not inspected by Steven & Lauren is 98 - 45 = 53
Hence, correct answer will bw (C) 53
