6th grade math problem PLEASE HELP!!
Favorites|Homepage
Subscriptions | sitemap
HOME > Mathematics > 6th grade math problem PLEASE HELP!!

6th grade math problem PLEASE HELP!!

[From: ] [author: ] [Date: 11-05-07] [Hit: ]
19.2% of 21 =4.therefore ans = 8.4 -4.032 =4.368 kg-4.......
Please help me solve this and explain how you got the answer.

A 21 kiligram sample of rocks from the moon is composed of 40% oxygen and 19.2% silicon. How many more kilograms more is the oxygen than the silicon mass?
Thank you.

-
40% of 21 =8.4 kg

19.2% of 21 =4.032 kg

therefore ans = 8.4 -4.032 =4.368 kg

-
4.368 kg

-
well first find the percentage in kgs and then find the difference
1
keywords: HELP,problem,math,th,grade,PLEASE,6th grade math problem PLEASE HELP!!
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .