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The answer is 12 because twice as many hours would be 24/2 and that =12
pratikn956

Answer:

If the Earth were to spend twice as fast as it does now it would be 12 hours in one day and 525600 hours in 1 complete spin.

Explanation:

In one day

24/2=12hrs

In one complete spin

365 × 24× 60= 525600hrs