Question
Esther bought some Social Science books at $10 each. She also bought an equal number of Chemistry books at a different price. The average price of one Social Science and one Chemistry book was $8. Esther paid $20 less for the Chemistry books than the Social Science books.
  1. What was the cost of one Chemistry book?
  2. How many Social Science books did Esther buy?
3 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Esther bought some Social Science books at $10 each. She also bought an equal number of Chemistry books at a different price. The average price of one Social Science and one Chemistry book was $8. Esther paid $20 less for the Chemistry books than the Social Science books.
  1. What was the cost of one Chemistry book?
  2. How many Social Science books did Esther buy?