Mathematics
Grade-8
Easy

Question

Sarah says, “I chose a number that is 17 more than 10 times of 3”. The number Sarah chose is

  1. 30
  2. 47
  3. 51
  4. 27

hintHint:

An equation has a constant, variable and an equal to sign. It has two sides LHS and RHS. A linear equation in one variable is equation with only one variable and in which the highest degree is 1. Here, we have to find the value of unknown value, by operating both sides with the same number so that the equation will be balanced.

The correct answer is: 47


In the question it is given that Sarah chose a number that is 17 more than 10 times of 3.
Here, we have to find the number chose by Sarah.
Step 1: Convert the word problem into numerical form.
Let the number chose by Sarah be x.
x= 17+10cross times3
Step 2: Solve RHS.
rightwards double arrowx= 17+30
rightwards double arrowx= 47
So, the number chose by Sarah is 47.
Therefore, the correct option is b,i.e., 47.

A linear equation in one variable is equation with only one variable and in which the highest degree is 1. A linear equation in one variable can be solved by placing the unknown values on one side and known values on another side of the equation. it is important to operate equal terms on both sides so that the equation will remain balanced.

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