UPSKILL MATH PLUS

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Convert the following:
 
(i) \(20\) minutes into seconds 
 
seconds
 
(ii) \(5\) hours \(35\) minutes \(40\) seconds into seconds
 
seconds
 
(iii) \(3 \frac{1}{2}\) hours into minutes
 
minutes
 
(iv) \(580\) minutes into hours
 
hours minutes
 
(v) \(25200\) seconds into hours
 
hours