Adishonest shopkeeper has two false balances. one balance weighs 10% more while
buying the goods and other weighs 10% less while selling the goods. find his gain percent just by weighing.

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)