Maths (280 Ka ? %) + (550 Ka 18 %) = 143.8

(280 का ?%) + (550 का 18%) = 143.8 - - (280 Ka ? %) + (550 Ka 18 %) = 143.8  Maths in hindi,  percentage  18 question answers in hindi pdf   21 questions in hindi, Know About 11 Maths online test Maths notes in hindi quiz book     16