how many kg of sugar must be added to 30 kg of 2 % solution of sugar and water to increase it to a 10 % solution ?
explanation : solution : amount of sugar in 30 kg solution = ( 2 / 100 * 30 ) kg = 0.6 kg . let x kg of sugar be added . then , ( 0.6 + x ) / ( 30 + x ) = 10 / 100 60 + 100 x = 300 + 10 x x = 240 / 90 = 8 / 3 = 2.6 answer : a
divide(subtract(multiply(30, 10), multiply(multiply(divide(2, const_100), 30), const_100)), multiply(30, const_3))