Question

A dad holds five coins in his hand. he tells his son that if he can 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?

Answer 1

The correct answer is, Son guess was not close enough to receive the money from his dad.

Step-by-step explanation:

A dad is holding 5 coins in his hands. He asked his son to guess the total amount of coins in his hands, and tells him that if the son guesses the amount right with a 5% error margin, he would give all the money to the son.

Now the son guessed that dad is holding 81 cents but dad opened his hands and the total amount of the coins was 90 cents.

Error margin given by dad to son is 5% of total amount which is:

=5% * 90

= 0.05 * 90

= 4.5

So If we subtract 4.5 from 90, it would be 85.5 which is not close to enough to receive the money from dad.