Beaker cost = 25 × 1.20 = <<25*1.20=30>>30
Related Articles
- #### 936822000
- A historian studies a 19th-century lab notebook showing that a scientist purchased 150 test tubes at $0.20 each and 25 beakers at $1.20 each. If taxes added 9% in 1885, what was the total cost including tax?
- Test tube cost = 150 × 0.20 = <<150*0.20=30>>30
- Subtotal = 30 + 30 = <<30+30=60>>60
- Tax = 60 × 0.09 = <<60*0.09=5.4>>5.4
- Total = 60 + 5.4 = <<60+5.4=65.4>>65.4
