Three-fourths of the first number is equal to the square of the second number. If the second number is 20\% of 45 , what is the sum of the first and s - Quantitative Aptitude MCQ Competitive Exam Practice 2026 | ExamTest.live

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Three-fourths of the first number is equal to the square of the second number. If the second number is 20% of 45, what is the sum of the first and second numbers?

Solution & Step-by-step Explanation

Let the first number be x and the second number be y . Step 1: Find the second number (y). y = 20% of 45 = \frac{20}{100} \times 45 = \frac{1}{5} \times 45 = 9 Step 2: Find the first number (x) using the given condition. \frac{3}{4} x = y^{2} \frac{3}{4} x = 9^{2} = 81 x = \frac{81 \times 4}{3} x = 27 \times 4 = 108 Step 3: Find the sum of x and y . Sum = x + y = 108 + 9 = 117

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Three-fourths of the first number is equal to the square of the second number. If the second number is 20% of 45, what is the sum of the first and second numbers?

125

117

272

264

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