Question

Riya studies for 16/3 hours daily. She devotes 14/5 hours of her time for Mathematics. How much time she devotes for other subjects?

Answer 1

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Given Suman studies for 5 (2/3) hours i.e. (17/3) hours And she devotes 2 (4/5) hours i.e. (14/5) hours for Science and mathematics.. Let x be the hours she devotes for other subjects. (17/3) = x + (14/5) x = (17/3) – (14/5) By taking LCM of 3 and 5 is 15 x = (17 × 5 – 14× 3)/15 x = (85 – 42)/15 x = (43/15) = 2 (13/15) hours