Wiki User
∙ 11y ago329
Wiki User
∙ 11y agoIt is: 28/40 times 100 = 70%
-40 + 70 = 30
the sum for 20 + 40 + 70 + 80 = 210
percentage = 40%% rate:= 28/70 * 100%= 0.40 * 100%= 40%
11. 10, 20, 30, 40, 50, 60, 70, 80 and 90 have One 0's each plus the number 100 has Two 0's hence making the total as 11.
It is: 28/40 times 100 = 70%
-40 + 70 = 30
The mean value of 100, 70, 70, and 20 is 65
To create an alloy with 40% copper, you would need to mix equal parts of the 20% alloy with the 70% alloy. This means you need to mix 50 ounces of the 20% alloy with 50 ounces of the 70% alloy to achieve the desired 40% copper content in the final alloy.
40
the sum for 20 + 40 + 70 + 80 = 210
100 + 70 = 170
percentage = 40%% rate:= 28/70 * 100%= 0.40 * 100%= 40%
11. 10, 20, 30, 40, 50, 60, 70, 80 and 90 have One 0's each plus the number 100 has Two 0's hence making the total as 11.
42 + 79 = 121 (40+70) + (2+9) = = 110 + 11 = 121
190
40