In the equation $Q-12=89$, what is the value of $Q$?
A) 78
B) 77
C) 102
D) 101
Answer (2)
Add 12 to both sides of the equation Q − 12 = 89 .
Simplify the equation to isolate Q : Q = 89 + 12 .
Calculate the sum: Q = 101 .
The value of Q is 101 .
Explanation
Understanding the Problem We are given the equation Q − 12 = 89 and we need to find the value of Q .
Isolating Q To isolate Q , we need to add 12 to both sides of the equation: Q − 12 + 12 = 89 + 12
Calculating the Value of Q Now, we simplify the equation: Q = 89 + 12 Q = 101
Final Answer Therefore, the value of Q is 101.
Examples
Imagine you are buying a toy that costs $89, and you have a coupon for $12 off. To find the original price of the toy before the discount, you would add the discount amount to the price you paid. In this case, the original price would be $89 + $12 = $101. This simple equation helps you determine the initial cost before any reductions.
By adding 12 to both sides of the equation Q − 12 = 89 , we find Q = 101 . The correct answer is option D) 101.
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