Question

at what rate percent per annum simple interest will a sum treble itself in 16 years? [ Hint. Let the sum be rs x . Then , amount = rs 3x.S.I. = ( 3x -x ) = rs 2x ]​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

• Let principal amount = p

• Money will be triple = 3p

• So interest in 16 years = 3p–p = 2p

• Yearly interest = 2p/16= p/8

• Rate of interest = {( p/8)/p}×100 = 100/8= 12.5%