Question

A teacher tells the class that the school obtained by Shreya is the math test is twice the lowest score plus 7. the score obtained by Shreya is 87.
What is the lowest score?​

Answer 1

Answer:

Let's assume the lowest mark is

′

x

′

.

twice the lowest mark will be 2x

given that twice the lowest marks plus seven is highest mark.

=> 2x+7=87

=>2x=80

=>x=40

Hence the lowestmark is 40.

Answer 2

Question

☛ A teacher tells the class that the score obtained by shreya in the math test is twice th lowest score plus 7.The acore obtained by shreya is 87. What is the lowest score ?

⠀⠀⠀⠀⠀⠀⠀⠀⠀

GiveN:-

☛ Shreya's score is twice the lowest score plus 7; the score obtained by shreya is 87.

⠀⠀⠀⠀⠀⠀⠀⠀⠀

To FinD:-

☛ The lowest score.

⠀⠀⠀⠀⠀⠀⠀⠀⠀

UnknowN:-

☛ Let the lowest score be l.

⠀⠀⠀⠀⠀⠀⠀⠀⠀

EquatioN:-

☛ Shreya's score would 2l + 7

☛ Since the score obtained by her is 87.

☛ 2l + 7 = 87

⠀⠀⠀⠀⠀⠀⠀⠀⠀

SolutioN:-

$\sf{2l + { { \cancel{7 }}}} - { { \cancel{7}}} = 87 - 7 \\ \sf = 2l = 80 \\ \sf{{ { \cancel \frac{2l}{2}}}} = \frac{80}{2}$

Hence,the lowest score is 40.⠀⠀⠀

▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄