Question

Find the rate of interest in which आ sum triples itself

Answer 1

Thanks for asking :)

Answer :

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Let the sum be P,

then the final Amount = 3P

S.I. = 3P – P = 2P, Time = 12 years

Now,

R =( S.I × 100)/(P × R)

= (100 × 2P)/(P × 12)

= 50/3

= 16.6 %

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Answer 2

Explanation:

They provide essential minerals for living bodies for their growth and development. The dissolved CO2 is used for photosynthesis in aquatic plants. The dissolved oxygen is used for respiration in aquatic plants, animals.