the compound interest on $ 27,000 at 11 % p . a is $ 11,000 . find out the period ( in years ) ?
"amount = 27,000 + 11,000 = 38,000 . . . . . . . . . now by using compound interest formula we get , 27,000 * ( 111 / 100 ) ^ n = 38000 = = = = > n = = 3 1 / 4 years ans - b"
divide(27,000, 11,000)