Question

19. Find the percentage decrease or increase in each
of the following cases.
a. The number of students enrolled in Class I
was 200 last year; the number of students
enrolled this year is 235.
b. The number of candidates failing in an
examination has come down from 15 to 9.​

Answer 1

Step-by-step explanation:

A) In the last year In class 1 the number of students enrolled were 200 . This year it is 235 .

So this is increase in percentage by 135%

B) The number of candidates falling in an examination has come down from 15 to 9

So this is decrease in percentage by 1.35%

MARK ME AS RHE BRAINIEST

Answer 2

Answer:

c. the volume of a balloon has reduced from 120 cm3 to 95 cm3

d. the length of rectangle his increased from 135 cm to 150