Question

WORD PROBLEMS

1) 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 marks is 87. what is the lowest marks?

2) solve the following:

I am a number
Tell my identity.
Take me two time over
And add a thirty six.
To reach a century
You still need four​

Answer 1

Step-by-step explanation:

1.lowest marks 40

2.The number is 30

Answer 2

Solution of 1st question......

Let the lowest marks be x

Given that,

Highest marks = twice the lower marks +7

Highest marks = 2x+7

Also,

Highest marks =87

_______________________________________

Solution of 2nd question.......

Let no. be x.

100−(2x+36)=4

100−2x−36=4

2x=60

x=30