mrs kaushik invested rs 30000 intotal,part of it at 5% and rest 8% simple interest earned was rs 2100 .how much did she invest at each rate.need the answer really quick

Dear Student,

Refer the following similar link:
https://www.meritnation.com/ask-answer/question/jassi-inherited-rs-12000-00-she-invested-part-of-it-at-10-a/linear-equations-in-one-variable/1606603

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