Question

Sachin got 60%marks in maths and 3 marks less than maths in science.if the total marks are 150, how many marks he scored in science?

Answer 1

Marks scored in Science is 79.50.

Step-by-step explanation:

Given,

Marks in Maths = 60% of x

Marks in Science = 60% of x-3

According to Question,

Total marks in Maths and Science = 150

60% of x + 60% of x -3 = 150

120% of x =150+3

120% of x = 153

x = $\frac{153}{120}\times 100$

  = 127.50

Hence,Marks scored in Science = (60% of 127.50) +3

                                         = 76.5 +3

                                         = 79.50

Answer 2

Answer:

Marks scored in Science is 79.50.

Step-by-step explanation:

Given,

Marks in Maths = 60% of x

Marks in Science = 60% of x-3

According to Question,

Total marks in Maths and Science = 150

60% of x + 60% of x -3 = 150

120% of x =150+3

120% of x = 153

x = \frac{153}{120}\times 100

120

153

×100

= 127.50

Hence,Marks scored in Science = (60% of 127.50) +3

= 76.5 +3

= 79.50

Step-by-step explanation:

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