A sum of money invested at 6percent for a certain period of time yield rpt 960 as interst if this sum had been invested for 5 years more it would have yield rpt 2160 as interst find the sum
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960=x×6×y/100
xy=96000/6=16000 ...(1)
2160=x×(y+5)×6/100
x(y+5)=216000/6=36000
xy+5x=3600
xy=36000-5x....(2)
from 1&2
36000-5x=16000
36000-16000=5x
x=20000/5=400
the sum is 4000
xy=96000/6=16000 ...(1)
2160=x×(y+5)×6/100
x(y+5)=216000/6=36000
xy+5x=3600
xy=36000-5x....(2)
from 1&2
36000-5x=16000
36000-16000=5x
x=20000/5=400
the sum is 4000
aakriti09373:
brilliant
can u tell me which formula you had applied?
simple interest=principal ×rate×time/100
in which class u study aakriti
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