Question:
A software company sets up m number of computer systems to finish an assignment in 17 days. If 4 computer systems crashed on the start of the second day, 4 more computer systems crashed on the start of the third day and so on, then it took 8 more days to finish the assignment. The value of m is equal to :
A software company sets up m number of computer systems to finish an assignment in 17 days. If 4 computer systems crashed on the start of the second day, 4 more computer systems crashed on the start of the third day and so on, then it took 8 more days to finish the assignment. The value of m is equal to :
Updated On: Jun 6, 2025
- 125
- 150
- 180
- 160
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The Correct Option is B
Solution and Explanation
\[ 17m = m + (m - 4) + (m - 4 \times 2) + \dots + (m - 4 \times 24) \]
\[ 17m = 25m - 4(1 + 2 + \dots + 24) \]
\[ 8m = 4 \times \frac{24 \times 25}{2} = 150 \]
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