MCQ
If $12$ workers can build a wall in $50$ hours, how many workers will be required to do the same work in $40$ hours?
- A$10$
- B$13$
- C$14$
- ✓$15$
$12 \times 50 = x \times 40$
$\text{x}=\frac{(12\times50)}{40}=15$
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