MCQ
$14$ workers can build a wall in $42$ days. One worker can build it in:
- A$3$ days.
- B$147$ days.
- C$294$ days.
- ✓$588$ days.
✓
Answer
Correct option: D.
$588$ days.
Let one worker take $x$ days to build the wall.
Clearly, one worker will take more days to finish the work.
So, it is a case of inverse proportion.
Now, $14 \times 42 = 1 \times x$
$\Rightarrow x = 14 \times 42$
$\Rightarrow x = 588$
$\therefore$ One worker can build the wall in $588$ days.
| No. of workers | $14$ | $1$ |
| No. of days | $42$ | $xx$ |
So, it is a case of inverse proportion.
Now, $14 \times 42 = 1 \times x$
$\Rightarrow x = 14 \times 42$
$\Rightarrow x = 588$
$\therefore$ One worker can build the wall in $588$ days.
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