Evaluate correct to the nearest whole number 7 ... - WAEC Mathematics 2005 Question
Evaluate, correct to the nearest whole number \(7\frac{1}{2}-\left(2\frac{1}{2}+3\right)\div\frac{33}{2}\)
A
33
B
8
C
7
D
o
correct option: c
\(7\frac{1}{2}-\left(2\frac{1}{2}+3\right)\div\frac{33}{2}\
=\frac{15}{2}-\left(\frac{5}{2}+\frac{3}{1}\right)\times\frac{2}{33}\
=\frac{15}{2}-\left(\frac{5+6}{2}\right)\times \frac{2}{33}=\frac{15}{2}-\frac{11}{2}\times \frac{2}{33}=\frac{15}{2}-\frac{1}{3}\
=\frac{45-2}{6}=\frac{43}{6}\)
=\frac{15}{2}-\left(\frac{5}{2}+\frac{3}{1}\right)\times\frac{2}{33}\
=\frac{15}{2}-\left(\frac{5+6}{2}\right)\times \frac{2}{33}=\frac{15}{2}-\frac{11}{2}\times \frac{2}{33}=\frac{15}{2}-\frac{1}{3}\
=\frac{45-2}{6}=\frac{43}{6}\)
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