17/150 = 25.5%
150-21--------- x 100 = the answer150
81%
You need (1.5) x (the percentage that's passing).
13 wrong out of 17 questions mean's you scored a 4 out of 17. 4 ÷ 17 = 0.235 or 23.5% which would round to 24%. Ouch.
% rate:= 17/19 * 100%= 0.8947 * 100%= 89.47%
It is: 36/150 times 100 = 24%
150-21--------- x 100 = the answer150
81%
64.7059%
84
138 questions right and 12 questions wrong
I assume you mean the percentage of 17 out of 20. If not, then I apologize, I misunderstood. Anyway, if I assumed correctly then 17/20 is in fact 85%.
It would be a 55%
You need (1.5) x (the percentage that's passing).
85%% rate of questions missed:= 17/20 * 100%= 0.85 * 100%= 85%
17 percent wrong, 83 percent right.
The percentage is 13/17 times 100/1 = 76.5% rounded