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प्रश्न
4 typists are employed to complete a work in 12 days. If two more typists are added, they will finish the same work in _________ days
पर्याय
7
8
9
10
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उत्तर
8
Explanation;
Hint:
| Typist | Days |
| 4 | 12 |
| 2 more added 4 + 2 = 6 | x |
4 × 12 = 6 × x, `(4 xx 12)/6` = x
x = 8
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