Quantitative Aptitude for Competitive Exam Success

Quantitative Aptitude

Algebra Averages Boats & Streams Data Interpretation Geometry HCF & LCM Mensuration Mixtures & Alligation Number System Partnerships Percentages Profit, Loss & Discount Ratio & Proportion Simple & Compound Interest Simplification Time & Work Time, Speed & Distance Trigonometry

Q. The roots of the equation x^2 - 7x + 10 = 0 are: (2019)

Solution

Factoring gives (x-2)(x-5)=0, hence the roots are 2 and 5.

Correct Answer: C — 3 and 4

Q. What is the value of x in the equation 5x + 2 = 17? (2023)

Solution

5x + 2 = 17 => 5x = 15 => x = 3.

Correct Answer: B — 3

Q. What is the value of y in the equation 9y - 5 = 22? (2023)

Solution

9y - 5 = 22 => 9y = 27 => y = 3.

Correct Answer: B — 3

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