Question
Rachel bought some Physics books at $7 each. She also bought an equal number of Biology books at a different price. The average price of one Physics and one Biology book was $5. Rachel paid $12 less for the Biology books than the Physics books.
  1. What was the cost of one Biology book?
  2. How many Physics 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 Physics books at $7 each. She also bought an equal number of Biology books at a different price. The average price of one Physics and one Biology book was $5. Rachel paid $12 less for the Biology books than the Physics books.
  1. What was the cost of one Biology book?
  2. How many Physics books did Rachel buy?