Word problem..Help?

1 ⤊

A chemist mixed some 15% peroxide solution with some 6% peroxide solution to make 300ml of a 9% peroxide solution. How many milliliters of the 15% solution was used?

Explain how.

2006-06-20 00:48:35 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help

4 answers

100ml of 15%, 200ml of 6%

the 300ml of 9% contains 300x9% of 100% strength, = 27ml.

100ml of 15% contains 15ml of 100% strength,
200ml of 6% contains 12 ml of 100% strength.

12+15=27.

2006-06-20 01:13:43 · answer #1 · answered by XT rider 7 · 1⤊ 0⤋

27 mil

2006-06-20 03:24:19 · answer #2 · answered by terry b 2 · 0⤊ 0⤋

I hate it when people try to cheat on their homework

2006-06-20 00:52:02 · answer #3 · answered by vcscallicoat 3 · 0⤊ 0⤋

ohhhh math i hate it

2006-06-20 00:51:27 · answer #4 · answered by seekinglife2020 3 · 0⤊ 0⤋