A grocer purchases some eggs at 3 for ₹ 5 and sold them at 5 for ₹ 12.thus, he gained ₹ 143 in all. How many eggs did he purchase
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Let 'n' be total number of eggs.
cost price = (n/3) * 5
selling price = (n/5) * 12
selling price -cost price = profit = 143
=> (12n/5) - (5n/3) = 143
=> n = (15/11) * 143
=> n= 195
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