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Instructions
What will come in place of the question mark (?) in the following questions ?
Solution
Expression : $$3\frac{2}{5}\times12\frac{5}{4}-2\frac{1}{5}\times5\frac{1}{4}=?$$
= $$(\frac{17}{5} \times \frac{53}{4}) - (\frac{11}{5} \times \frac{21}{4})$$
= $$\frac{901}{20} - \frac{231}{20} = \frac{901 - 231}{20}$$
= $$\frac{670}{20} = \frac{67}{2} = 33\frac{1}{2}$$
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