I want to be sure I am doing the Percentage Error correct for the Biology 201 Lab. Ques: A dad hold five coins in his hand.

I want to be sure I am doing the Percentage Error correct for the Biology 201 Lab.

Ques: A dad hold five coins in his hand. He tells his son that if he an guess the amount of money he is holding within 5% error he can have the money. The son guesses that he is holding 81 cents. The dad opens his hand and displays 90 cents. Did the son guess close enough to receive the money from his father?

exact value-approx value/exact value(100)

90-81=9

9/90=0.1

0/1(100)=

10

No. 10% error