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a sum of 1500 is invested for 3years compounded at 5%, 10% and 20% respectively find the compound interest at the end of 3 years |
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Answer» plz MARK me as BRILLIANT Step-by-step explanation:Let the original amount = RS. 100.In the first year, it increases by 5%.∴ the amount after 1 yr. = Rs. (100+100× 5/100 )= Rs. 105.In the second year, it increases by 10%.∴ the amount after 2 yr. = Rs. (105+105× 10/100 )= Rs. 115.5.In the third year, it increases by 20%.∴ the amount after 3 yr. = Rs. (115.5+115.5× 20/100 )= Rs. 138.6. =138.6% of Rs. 100∴ Rs. 138.6% of the original money = Rs. 16632.⇒ The original money = Rs. 138.616632 ×100= Rs. 12000 |
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