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60s
SSC CGL
Quantitative Aptitude
Algebra
Easy
Practice Question
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Learn + solve
Solve this faster with the right shortcut first
Shortcut used: Define the variable, form the equation, then solve step by step.
Solve in 3 steps:
- Let the unknown be a variable.
- Translate the statement into an equation.
- Solve and verify in options.
Common mistake: Do not change signs while moving terms across the equation.
Question 10
Multiple Choice Question
Question
If 10x + 30 = 150, find x.
Explanation
Correct Answer: D
ANSWER
Correct Answer: D
Method / Topic: Algebra
10x = 150 - 30 = 120; therefore x = 12. Therefore, the required answer is 12.
Why this answer is correct
The answer satisfies the equation formed from the question.
Short Explanation
10x = 150 - 30 = 120; therefore x = 12. Therefore, the required answer is 12.
Detailed Explanation
Question
If 10x + 30 = 150, find x.
ANSWER
Correct Answer: D
Method / Topic: Algebra
METHOD
Apply the relevant algebraic equation, identity, exponent rule, polynomial rule, or factorization
METHOD
.
CALCULATION:
10x = 150 - 30 = 120; therefore x = 12.
CHECK:
The calculated value matches the selected option exactly.
Final Answer
12
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Back to Topic
SSC CGL
Quantitative Aptitude
Algebra
60s
Question 10
Easy
Marks: 1.0
Practice Question
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Learn + solve
Shortcut used, common trap, and the fastest solving route
Shortcut used: Define the variable, form the equation, then solve step by step.
Solve in 3 steps:
- Let the unknown be a variable.
- Translate the statement into an equation.
- Solve and verify in options.
Common mistake: Do not change signs while moving terms across the equation.
Question
If 10x + 30 = 150, find x.
Explanation
Correct Answer: D
ANSWER
Correct Answer: D
Method / Topic: Algebra
10x = 150 - 30 = 120; therefore x = 12. Therefore, the required answer is 12.
Why this answer is correct
The answer satisfies the equation formed from the question.
Short Explanation
10x = 150 - 30 = 120; therefore x = 12. Therefore, the required answer is 12.
Detailed Explanation
Question
If 10x + 30 = 150, find x.
ANSWER
Correct Answer: D
Method / Topic: Algebra
METHOD
Apply the relevant algebraic equation, identity, exponent rule, polynomial rule, or factorization
METHOD
.
CALCULATION:
10x = 150 - 30 = 120; therefore x = 12.
CHECK:
The calculated value matches the selected option exactly.
Final Answer
12
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