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8 workers can build a wall 18 m long, 2 m broad and 12 m high in 10 days, working 9 hours a day. Find how many workers will be able to build a wall 32 m long, 3 m broad and 9 m high in 8 days working 6 hours a day ?
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- 16
- 20
- 30
- 10
Correct Option: C
Using Rule 1,
⇒ 18 × 2 × 12 × 6 × 8x = 32 × 3 × 9 × 9 × 10 × 8
⇒ x = | = 30 days | 18 × 2 × 12 × 6 × 8 |