Question

The teacher tells the class that the highest marks obtained by a student in her class is twice the Lowest marks plus 7 . The highest score is 87. What is the Lowest score​

Answer 1

Given,

        The highest score in the class is 87

        The highest score is equal to twice the lowest mark plus 7

To find,

                       The lowest score in the class.

Solution,

 Consider,

                         the lowest score in the class be x marks

According to the question,

                             The highest Score = 2(Lowest Mark) + 7

                                    ⇒ 87 = 2x + 7

                                    ⇒ 2x + 7 = 87

                                    ⇒ 2x = 87 - 7

                                    ⇒ 2x = 80

                                    ⇒ x = 80/2

                                    ⇒ x = 40

Therefore,

                the lowest mark in the class is 40.