please help me figure out this question with the explanation on how to do it

3. The income of a woman is $3200 per year. The cost of raising a child is $200 per year, and the cost of attaining a year of education is $180 per year. The indifference curves are provided in the graph below. Use X axis for children, and Y for Education. (10 points). 30m INDIFFERENCE CURVES 25m zone 151,0 10m 5.\") LCD 1.!\" 6.\") 8.\") 10.00 11.00 14.00 16m 15m 2000 a. Determine the number of children the woman will have (optimal level). describe how you obtained the answer. (5 points) b. Approximately how many years of education will the woman attain (optimal level)?describe how you obtained the answer. (5 points)