ALGEBRA II-UNIT #1-PART #2- BRAIN TEASERS-DAY #32-(10/9/14)
Brain Teaser- "Flip a Coin"
A man makes the following proposition to his friend:
"I will let you flip a coin 20 times. Each time the coin lands on heads, I will give you $2.00. However, each time the coin lands on tails, you must give me $3.00."
His friend flips the coin 20 times and the end result is that no money is to change hands.
How many times did the coin land on heads?
HINT: Use the Problem Solving strategy of creating an equation to help you solve this. (Let x be the number of heads) (Remember when creating an equation that the two dollar amounts are equal at the end, no money has exchanged hands, $Heads=$Tails)
"I will let you flip a coin 20 times. Each time the coin lands on heads, I will give you $2.00. However, each time the coin lands on tails, you must give me $3.00."
His friend flips the coin 20 times and the end result is that no money is to change hands.
How many times did the coin land on heads?
HINT: Use the Problem Solving strategy of creating an equation to help you solve this. (Let x be the number of heads) (Remember when creating an equation that the two dollar amounts are equal at the end, no money has exchanged hands, $Heads=$Tails)