Percentage phenotype in eye color in humans

Question

In humans, brown eyes are dominant to blue eyes. If a blue-eyed man marries a brown-eyed woman whose mother has blue eyes, what percentage of the brown-eyed offspring do you expect will be heterozygous?

Answer 1

so the man would be bb and the woman would be Bb, the kids would be Bb,bb,Bb,bb so the answer should be 50% but the webpage says that that's incorrect.

Answer 2

I agree with you. Possibly that is a typo on the web page.