a sum of money invested at simple interest amounts to rupees 1300 in 8 years and rupees 1000 in 5 years.
find the principal and the rate of simple interest
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p+8i=1300
p+5i=1000
3i =300
i=100
p=1000-5×100=500
r=(100×i)/p×t
100×800/500×8=20%
p+5i=1000
3i =300
i=100
p=1000-5×100=500
r=(100×i)/p×t
100×800/500×8=20%
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