Makiba's family has been saving $2,000 a year for 18 years toward her college education. Makiba herself has been saving $250 every month for four years. She wants to complete a four-year program costing $15,000 a year. How much will have to be covered by scholarships or student loans?
The total amount saved over 18 years by Makiba's family is $2000/year x 18 years = $<<2000*18=36000>>36000.
If Makiba saves $250 a month for 4 years, she will save a total of $250/month x 12 months/year x 4 years = $<<250*12*4=12000>>12000.
The total savings by Makiba's family and Makiba herself is $36000 + $12000 = $<<36000+12000=48000>>48000.
The total cost of the four-year program is $15,000/year x 4 years = $<<15000*4=60000>>60000.
Therefore, scholarships or student loans will need to cover $60000 - $48000 = $<<60000-48000=12000>>12000. Answer: \boxed{12000}.
Arianna has just had a child. She and her husband's net income is $60,000 a year between them. She established a savings account for her child that needs to contain $90,000 after 18 years. What percent of her household's income will need to be set aside for the baby's college fund?
The total income Arianna and her husband make over 18 years is $60,000/year x 18 years = $<<60000*18=1080000>>1080000.
The percentage of their income they need to set aside each year is $90,000 / $1,080,000 = 0.0833...
After converting to a percentage and rounding to the nearest percent, Arianna and her husband need to set aside 8% of their household income for their baby's college fund. Answer: \boxed{8}.