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12.3.3 Quiz: Solving Systems of Equations
Question 2 of 10
2 Points
ABC Bookstore sells new books, n, for $12, used books, u, for $8, and
magazines, m, for $5 each. The store earned $340 revenue last month. The
store sold 5 more used books than new books, and twice as many magazines
as new books. Using the substitution method, how many magazines, new
books, and old books did ABC bookstore sell?

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

6 adults and 9 children went.

a + c = 15

12a + 9c = 153

12(6) + 9(9) = 153

72 + 81 = 153

333.74 ! should be your answer for this question