7. A certain sum of money at simple interest amounted rs.840 in 10 years at 3% per annum, find the su
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Answer:
646.15
Step-by-step explanation:
Formula: SI = (p * r * t)/100
Here,
SI = 840 - p
840 - p = (p * 3 * 10)/100
or, 840 - p = 3p/10
or, 8400 - 10p = 3p
or, 13p = 8400
or, p = 646.15
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