Lynne bought 7 books about cats and 2 books about the solar system. She also bought 3 magazines. Each book cost 7$ and each magazine cost $4. How much did Lynne spend in all?
How many books did Lynne buy? ** Lynne bought a total of 7 + 2 = <<7+2=9>>9 books
How much did the books cost? ** The books cost Lynne 9 x 7 = $<<9*7=63>>63
How much did the magazines cost? ** For 3 magazines, Lynne spent 3 x 4 = $<<3*4=12>>12
How much did Lynne spend in all? ** In total, Lynne spent 63 + 12 = <<63+12=75>>75$
#### 75