Find the value of the following expression: 5.2 times 5.2 minus 2.5 times 2.5, all divided by 7.7 times 2.7.
A20.79 over 20.25
B20.75 over 20.50
C2
D1 ✓ Correct
Correct answer: (D) 1
Explanation
The value is 1.
Numerator = 5.2^2 - 2.5^2.
Use a^2 - b^2 = (a - b)(a + b) = 2.7 x 7.7.
Denominator = 7.7 x 2.7.
Ratio = (2.7 x 7.7) / (7.7 x 2.7) = 1.
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