John is having an exam with questions that require many answers. the exam has 20 questions. for every correct answer he gets 5 points and for every mistake he loses 2 points. john answers all of questions and in the end he receives 51 points.*how many correct answers are there? *

to get 52 marks there has to be a combo of right and wrongs marks.

i just used trial and error, and logic that there must me more right than wrong to get::

13 right answers (13x5=65)

+ 7 wrong (-2x7=-14)

65-14=51

can you add an image ?

step-by-step explanation:

according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

step-by-step explanation: