Assuming you want letter grades, in the US, most schools would consider that a "B".
85% of 140 test tubes= 85% * 140= 0.85 * 140= 119 test tubes
what you do is you divide 100 by the amount the test was out of then times your answer by your mark
20-3 = 17 and 17/20 = 85/100 = .85 or 85%. Percent is a ratio per cent or 100. Multiplying both the 20 and the 17 by 5 will make the denominator 100 and the percent sought after.
40 questions
27 percent of 85 is 22.95.
The answer depends entirely on the test and the individual taking it. One some tests, 85% is incredibly good; one other tests it is very poor. Likewise 85% might be an excellent mark for me on some test, but a failing mark for an expert in the subject.
85% of 140 test tubes= 85% * 140= 0.85 * 140= 119 test tubes
That depends whether 85 corresponds to your percentage, or your mark. If you get 85 marks on a 90 question test, then you have missed five questions.
(77+83+89+86+x)/5=85 (335+x)/5=85 (335+x)=85*5 335+x=425 x=425-335 x=90 He must get 90% on his fifth test to average 85%.
what you do is you divide 100 by the amount the test was out of then times your answer by your mark
20-3 = 17 and 17/20 = 85/100 = .85 or 85%. Percent is a ratio per cent or 100. Multiplying both the 20 and the 17 by 5 will make the denominator 100 and the percent sought after.
your average is currently 80 now if you get a 100 on the next test it will become a 90
40 questions
No more than 17 of them.
85 percent = 0.85
85 percent of 75 is 63.75
27 percent of 85 is 22.95.