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\((3{1\over4} + 5{2\over3} + 7{2\over5})\) is equal to 
1. \(136{17\over60}\)
2. \(136{19\over60}\)
3. \(136{21\over60}\)
4. \(136{23\over60}\)

1 Answer

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Best answer
Correct Answer - Option 1 : \(136{17\over60}\)

Concept:

\(x\frac{y}{z} = \frac{{\left( {x \;\times\; z} \right) \;+ \;y}}{z}\)

Calculation:

\((3{1\over4} + 5{2\over3} + 7{2\over5})\)

\(\frac{{\left( {4 \;\times\; 3} \right) \;+ \;1}}{4} + \frac{{\left( {5 \;\times\; 3} \right) \;+ \;2}}{3} \;+\; \frac{{\left( {7 \;\times \;5} \right)\; +\; 2}}{5}\)

\(\frac{{13}}{4} + \frac{{17}}{3} + \frac{{37}}{5} = \frac{{8177}}{{60}} = 136\frac{{17}}{{60}}\)

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