Question

A certain sum of money at simple interest amounts to 13,000 in 4 years and to 15250 in 7 years Find the sum and the rate per cent​

Answer 1

Answer:

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Step-by-step explanation:

Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. ... Electric charge is a conserved property; the net charge of an isolated system, the amount of positive charge minus the amount of negative charge, cannot change.