Camthainese

Can someone help me solve the following question: In man, the two genotypes D/D and D/d are Rh+ and d/d is Rh-. The frequency of Rh- people in the population is about 16/100. a) what proportion of the children in a series of families in which one parent is Rh+ and the other Rh- would be expected to be Rh+? b) What proportion of the children from a series where both parents are Rh+ would be expected to be Rh+? c) Amongst the Rh+ children from part b, what proportion are carriers? I somehow got 84/625 for part a and 1-(84/625) for part b. I'm pretty sure it's totally off, so if someone can help explain this to me, I would appreciate it. L