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Fill in the blanks. (1) p=(100xx(…..))/(...

Fill in the blanks.
(1) `p=(100xx(…..))/(RxxT)`
(2) `R=(100xxSI)/((……)xxT)`
(3) At (….)% per annum simple interest a sum double itself in 10 years.
(4) At simple interest a sum becomes `6/5` of itself in `2. 1/2`years.The rate of interset is (…..)% per annum.

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