Plz help me asap. Only the answers don't need explanation

On a peertopeer (P2P) lending website, borrowers complete an approval scoring form that lenders use to assess creditworthiness. Borrowers are rated A, B, C or D, based on their scores, with A having the highest scores and D having the lowest. In a large sample of borrowers, 28% were rated A, 25% were rated B, 20% were rated C, and the rest were rated D. Suppose the scores are normally distributed with a mean of 332 and a standard deviation of 49. Round numeric answers to the nearest integer. a) What is the cutoff score between A and B? b) What is the cutoff score between B and C? C] c) What is the cutoff score between C and D? e) What score corresponds to the 10th percentile? d) What score corresponds to the 85th percentile? C] f) What is the minimum score above which lies 9% of the scores? C] g) Between what scores will the middle 56% of scores lie? Lower value = C] Higher value = C]