3. After spending rubees 72/1/2, Ruby was left with rupees 7/3/4 How much did she have in the beginning?
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Answer:
Money spent by Ruby= Rs. 72 1/2
Money Ruby has left= Rs. 7 3/4
Total money Ruby had in the beginning= 72 1/2+7 3/4
= 72 1/2+ 7 3/4 (convert them into improper fractions)
= 145/2+ 31/4
lcm= 4
= 290+31/4
= 321/4
= 80 1/4
Therefore, Ruby had Rs. 80 1/4 or Rs. 80.25 in the beginning.
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