100*11/39 = 28.2% (approx)
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that's very good then that's 28 you got right try asking your teacher for the percent
The percent of increase from 30 to 39 is: 30%
Change the percent into a decimal. 88% is the same thing as 0.88 Take the number of questions and multiply by the decimal. 45 x .88 = 39.6 The mathematical answer would be "39.6", although it's unlikely that there's "0.6" of a question. You got 39 to 40 questions correct.
To find a percentage, multiply the percent you are looking to find (39) by the number in question (150) 39% x 150 39%=39/100, or .39... so, .39 x 150 = 58.5
32 is 39% of 82.05