Double Sunglasses
"Double Sunglasses" by Dan Meyer CC BY-NC 3.0
What percent tint will there be when he puts on both pairs of sunglasses?
Write down a guess you think is too small.
Write down a guess you think is too big.
Now calculate what you think the correct answer is.
Can he reach 100% tint this way?
How many pairs of 50% tint sunglasses would it take?
Write down a guess you think is too small.
Write down a guess you think is too big.
Now calculate what you think the correct answer is.
Can he reach 100% tint this way?
How many pairs of 50% tint sunglasses would it take?
