If a certain sum of money at si doubles itself in 5 yrs then what is d rate?
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rate percent is 20........
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let sum be rs.x. amount be rs.2x
then SI =rs.(2x-x) =rs.x.
given. t =5 yrs. therefore,
R=100 × SI ÷ p × t.
= 100 × x ÷ x × 5. =20 % p.a.
then SI =rs.(2x-x) =rs.x.
given. t =5 yrs. therefore,
R=100 × SI ÷ p × t.
= 100 × x ÷ x × 5. =20 % p.a.
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