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(a) 300AND how do you round off 0.04053 to (i) 2 SFs (ii) 3 SFs? Ack. And for this question (the rounding off one), when you rewrite the new rounded-off number, does it change the value of the number? How do you express it? O:
(b) 0.00100
(c) 6.304
(d) 0.04
(e) 407
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Ten workers planned to produce 10 tonnes of soap powder in 10 weeks, working 10 hours every day. In the first 10 days, they produced 10kg less than 10% of the total amount they planned to produce. In the next 10 days, they produced 10% more soap powder than in the first 10 days. They then decided to complete the job 10 days earlier. At what rate must they work in order to meet the new target? Give your answer correct to the nearest gram per hour per worker.
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