The number of students in a primary school increases by 20% every year. If the number of students in the previous year was 700, then what will be the number of students in the present year ?

600

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720

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840

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960

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Solution

The correct option is C 840
Given, the number of students in the previous year = 700
Every year number of students increases by 20%

Then, number of students in the coming year = (100 + 20)% of 700
= 120% of 700

= $\frac{120}{100} \times 700$

= $1.2 \times 700$

= 840

Therefore, number of students in the coming year will be 840

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Question 41
Read the bar graph given below and answer the following questions.

(a) What information is given by the bar graph?
(b) In which year is the number of students maximum?
(c) In which year is the number of students twice as that of 2001- 02?
(d) In which year did the number of students decreases as compared to previous year?
(e) In which year are the increases in the number of students maximum as compared to the previous year?

Q. The number of students in a primary school increases by 20% every year. If the number of students in the previous year was 700, then what will be the number of students in the present year ?

The number of students in a school is increased by $7 %$ this year. If the present strength of students in the school is $15, 194$ , what was the last year?

Q. The number of students enrolled in a school is

2000

. If the enrollment increases by

5

% every year, how many students will be there after two years?

Q. The percentage increase in the total number of students of a school over that in the previous year.

$Y e a r$	$P e r c e n t a g e i n c r e a s e$
$1999 - 2000$	$20 %$
$2000 - 2001$	$30 %$
$2001 - 2002$	$10 %$

Find the effective percentage increase in the number of students from

1998 - 1999

2000 - 2001

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