Question

75% of the students In a class passed an exam if two more students had passed the exam 80 percentage have been successful how many students are there in the class​

Answer 1

Answer:

40

Step-by-step explanation:

As 2 students made 5 percent then 4 students will made 10 percent .

So 4 multiply by 10 is 40

Answer 2

Answer:

40 students

Step-by-step explanation:

75% can also be written as 75/100

taking x as common multiple

75x/100x,

where 75x=students passing and 100x=total students

80% can also be written as 80/100

according to the condition,

75x+2/100x=80/100

cross multiplying

100(75x+2)=80(100x)

7500x+200=8000x

200=8000x-7500x

200=500x

x=200/500

x=0.4

Total students=100x=100×0.4

=40