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assuming P to be 100
interest for 5 %= PTR÷100
5×100×3÷100 = 15
interest for 7% = 7×100×3÷100 = 21
DIFFERENCE BETWEEN FIRST AND THE SECOND IS 6
UNITARY METHOD
30×100÷6 = 500
interest for 5 %= PTR÷100
5×100×3÷100 = 15
interest for 7% = 7×100×3÷100 = 21
DIFFERENCE BETWEEN FIRST AND THE SECOND IS 6
UNITARY METHOD
30×100÷6 = 500
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