rick has $1400 and sally has $1500
step-by-step explanation:
to find amount of money rick has after 10 years :
principal = $1000 , time = 10 years , rate = 4% annually
to find amount of money sally has after 10 years :
her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500
also, sally gets $1000 after 10 years,
therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500
so, after 10 years : rick has $1400 and sally has $1500
