In an examination, $80$ % students passed. If $9$ less had appeared and $5$ less passed, the ratio of passes to failures would have been $5 : 1$ .
Then the number of students passed and appeared are
$40, 50$
$80, 100$
$60, 75$
$32, 40$

40, 50

32, 40

80, 100

60, 75

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In an examination,

80

% students passed. If

9

less had appeared and

5

less passed, the ratio of passes to failures would have been

5 : 1

.
Then the number of students passed and appeared are

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In an examination, the ratio of passes to failures was 4 : 1. Had 30 less appeared and 20 less passed, the ratio of passes to failures would have been 5 : 1. Find the number of students who appeared for the examination.

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In an examination, the number of those who passed and the number of those who failed was in the ratio of 3 : 1. Had 48 more appeared, and 8 more failed the ratio of passed to failures would have been 10 : 3. How many students appeared for the examination?

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In examination, the ratio of passes to failures was

4 : 1

. Had

30

less appeared and

20

less passed the ratio passes to failures would have same. Find the no of total students.

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In an examination, the ratio of passes to failures was 4 : 1. Had 30 less appeared and 20 less passed, the ratio of passes to failures would have been 5 : 1 Find the number of students who appeared for the examination.

Suppose x candidates passed and y failed;
therefore, $\frac{x}{4} = \frac{4}{1} \dots (I)$

In the second case: no. of students appeared = x + y - 30 and no. of those who passed = x - 20:

$∴$ No. of failed = $x + y - 30 - (x - 20) = y - 10$

Given: $\frac{x - 20}{y - 10} = \frac{5}{1} \dots (I I)$

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In an examination, 80% students passed. If 9 less had appeared and 5 less passed, the ratio of passes to failures would have been 5:1.Then the number of students passed and appeared are40,5080,10060,7532,40

In an examination, $80$ % students passed. If $9$ less had appeared and $5$ less passed, the ratio of passes to failures would have been $5 : 1$ .
Then the number of students passed and appeared are
$40, 50$
$80, 100$
$60, 75$
$32, 40$