Covers putting by Sohan on Monday = 1/ 4
Covers putting by him on Tuesday = 1/4
∴ Covers putting by him on Wednesday
=1-\(\frac { 1 }{ 4 } -\frac { 1 }{ 4 } =\frac { 4 }{ 4 } -\frac { 1 }{ 4 } -\frac { 1 }{ 4 } \)    [∵ 1 and 4/4 are equivalent fractions]
= \(\frac { 4-1-1 }{ 4 } =\frac { 2 }{ 4 } =\frac { 1 }{ 4 } \)
Hence he put one-half of the covers on Wednesday

Jitesh

Painted part of square

Fraction of students, who got first class in class A
 = \(\frac { 24 }{ 30 } =\frac { 24\div 5 }{ 25\div 5 } =\frac { 4 }{ 5 } \)  [∵ HCF of 20 and 25 = 5]
Fraction of students, who got first class in class B
= \(\frac { 24 }{ 30 } =\frac { 24\div 6 }{ 30\div 6 } =\frac { 4 }{ 5 } \) [∵ HCF of 24 and 30 = 6]
∵ \(\frac { 20 }{ 25 } =\frac { 24 }{ 30 } =\frac { 4 }{ 5 } \)
So, it is clear that an equal number of students got first class in both the classes.

\(\frac { 2 }{ 8 } \)

\(\frac { 4 }{ 15 } \)

\(\frac { 3 }{ 10 } \)

\(\frac { 8 }{ 11 } \)

7

\(\frac { 1 }{ 2 } \)

30

15

\(\frac { 1 }{ 6 } \)

\(\frac { 5 }{ 3 } \)

\(\frac { 3 }{ 7 } \)

Totalnumber of circles= 8; Number of circles having X = 4
 ∴  Required fraction = \(\frac { Number\ of\ circles\ having\ X }{ Total\ number\ of\ circles } =\frac { 4 }{ 8 } =\frac { 1 }{ 2 } \)

Natural numbers from 102 to 113 = 102, 103, 104, 105, 106,107, 108, 109, 110, 111, 112 and 113.
 Total natural numbers = 12
Prime numbers from 102 to 113 = 103, 107, 109, 113
Total prime numbers = 4
 ∴ Required fraction = \(\frac { Total\ prime\ numbers }{ Total\ natural\ numbers } =\frac { 4 }{ 12 } =\frac { 1 }{ 3 } \)

Natural numbers from 2 to 12 = 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.
Total natural numbers - 11
Prime numbers from 2 to 12 = 2, 3, 5,7, 11
∴ Required fraction = \(\frac { Total\ prime\ numbers }{ Total\ natural\ numbers } =\frac { 5 }{ 11 } \)

Total number of dresses to be dyed = 30
Number of dresses finished = 20
∴ Required fraction of finished dresses
= \(\frac { Number\quad of\quad dress\quad finished }{ Total\quad number\quad of\quad dresses } =\frac { 20 }{ 30 } =\frac { 2 }{ 3 } \)

We know that, total minutes in an hour = 60 min
∴   Required field fraction = \(\frac { 40\quad min }{ 60\quad min } =\frac { 40 }{ 60 } =\frac { 2 }{ 3 } \)

We know that, total hours in a day = 24 h
∴   Required field fraction = \(\frac { 8h }{ 24h } =\frac { 8 }{ 24 } \)

Total number of equal parts = 8; Shaded parts = 4
 ∴ Fraction representing the shaded portion = \(\frac { 4 }{ 8 } \)

Total number of equal parts = 4; Shared parts = 2
∴ Fraction representing the shaded portion
 = \(\frac { Number\ of\ shaded\ parts }{ Total\ number\ of\ equal\ parts } =\frac { 2 }{ 4 } \)

We know that, one day = 24 h
\(\therefore\) The required fraction = \(\frac { 15\ h }{ 24\ h } =\frac { 15 }{ 14 } =\frac { 5 }{ 8 } \)

Here, the given figure is divided into 4 equal parts and 3 parts out of 4 parts are shaded.
∴ The required fraction = \(\frac { 3 }{ 4 } \)