1) Student multiplied a number by 3/5 instead of 5/3.What is the percentage error in the calculation? A) 65% B) 68% C) 70% D) 72% E) 64% Answer: Option EExplanation:Let number be xActual number =5x3 and error number =3x5Error = 5x3−3x5=16x15Error % = 15(5x3)×100= 64%