MATHEMATICS
JAMB 2018 - Question 11
Mathematics 2018 JAMB Past Questions - Question 11: Solve for t in the equation 3/4 + 1/3 (21-t) = 11
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Correct Answer
D
Explanation
To solve for \( t \) in the equation \( \frac{3}{4} + \frac{1}{3}(21-t) = 11 \), we can follow these steps:First, let's simplify the equation:Multiply both sides by 12 to clear the fractions:\[ 9 + 4(21-t) = 132 \]Expand and simplify:\[ 9 + 84 - 4t = 132 \]\[ 93 - 4t = 132 \]Subtract 93 from both sides:\[ -4t = 132 - 93 \]\[ -4t = 39 \]Divide by -4:\[ t = \frac{-39}{-4} \]\[ t = 9.75 \]So, the value of \( t \) is 9.75.

