Question

4) A primary school had an enrollment of 850 pupils in January 1970. in January 1980 the anrolment was 120
was the percentage increase for the​

Answer 1

Answer is  31.7647 %

previous  enrolment was 850 and  new is 1120

difference is of 270.

so we calculate  how much % is 270 of 850.

(270/850) x 100 = 31.7647%

Answer 2

The percentage decrease is 85.882%

Step-by-step explanation:

Enrollment in 1970 = 850

Enrollment in 1980 = 120

Decrease in enrollment = 850-120 = 730

So, Percentage decrease = $\frac{Change}{\text{initial population}} \times 100$

Percentage decrease =$\frac{730}{850} \times 100=85.882\%$

Hence the percentage decrease is 85.882%

#Learn more:

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