Question

1) in which subject has the performance improved the must? 2) in which subject has the performance deteriorated? 3) in which subject has the performance at par?​

Answer 1

Answer:

1. maths

2.e english

3.hindi☺️

Answer 2

1) The performance has improved the most in Mathematics.

2) The performance has deteriorated in English.

3) The performance has stayed at par in Hindi.

• For comparing improvement in the subjects, we will calculate the relative rate of growth as:

                            R = $\frac{Difference in marks}{Initial Marks }$ × 100  

• We will compare maths, social science and science as marks have increased in only these subjects.

• Substituting values in the given formula, we get:

1.Mathematics :

                                   R = $\frac{60 - 30}{60}$ × 100 =

                                   R = $\frac{30}{60}$ × 100

                                  R= 50%

2. Social Studies

                                    R = $\frac{55 - 50}{50}$ × 100

                                    R = $\frac{5}{50}$ × 100

                                    R = 10%

3. Science

                                    R = $\frac{50 - 45}{45}$ × 100

                                    R = $\frac{5}{45}$ × 100

                                  R = 11.12 %

Therefore, we can conclude that the performance has improved the most in mathematics.

• The performance is said to deteriorate in English because the marks of the student have gone down from 50 to 45 in the successive year.
• The performance has stayed at par in Hindi as the marks have stayed 60 in both years.

Hence, answers to the question parts are:

1. Mathematics
2. English
3. Hindi