Question
Rachel bought some Chemistry books at $10 each. She also bought an equal number of Biology books at a different price. The average price of one Chemistry and one Biology book was $7. Rachel paid $24 more for the Chemistry books than the Biology books.
  1. What was the cost of one Biology book?
  2. How many Chemistry books did Rachel buy?
3 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Rachel bought some Chemistry books at $10 each. She also bought an equal number of Biology books at a different price. The average price of one Chemistry and one Biology book was $7. Rachel paid $24 more for the Chemistry books than the Biology books.
  1. What was the cost of one Biology book?
  2. How many Chemistry books did Rachel buy?