75% of the students in a class passed an exam if 2 more students had passed the exam , 80% would have been successful . how many students are there in the class.

5 answers

.75x + 2 = .80x
Now you can find x

75/100*x+2=80/100*x

40

can i see my test

75/100x+2=80/100x
3/4x+2=4/5x
2=4/5x-3/4x
Now take LCM of 5 and 4
2 =16x-15x/20
2=x/20
Now divide two by one and x by twenty then multiply both
X=2×20=40 students

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