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One way you could do this is multiply 40 by 30% which is the same as 40 x .3. I do it a faster way though. I take 10% of 40, which is 4 since you move the decimal point once to the right. Then I multiply 4 by 3 to get the correct answer of 12.
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What is the average of 30 40 10 40?
30 + 40 + 10 + 40 = 120120/4 = 30Average = 30
What is 50 plus 40 plus 40 plus 40 plus 30 plus 30 plus 20 plus 10?
50 + 40 + 40 + 40 + 30 + 30 + 20 + 10 = 260
What is 30 off of 40?
40 - 30 = 10 if question is percent then 40 = 100% 4 = 10% 12 = 30% 40 - 12 = 28
What is the decimal 30 over 40?
0.7530/40:= 30 ÷ 40= 0.75 in decimal
How do you write 30 40 in roman numerals?
30 and 40, or 3040? 30 = XXX 40 = XL 3040 = MMMXL
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