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प्रश्न
A man spends `2/5` of his salary on food and `3/10` on house rent, electricity, etc. What fraction of his salary is still left with him?
योग
उत्तर
Let salary of man = Rs. 1
Amount spent on food = `2/5` of Rs. 1 = Rs. `2/5`
and amount spent house rent = `3/10` of Rs. 1
= Rs. `3/10`
Total amount spent = Rs. `2/5 + 3/10 = (4 + 3)/10 = 7/10`
∴ Amount left with him = `1 - 7/10 = (10 - 7)/10 = 3/10`
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