Question

20. A shopkeeper bought locks at the rate of 8 locks for 334 and sold them at the rate of 12 locks for 51
Calculate:
(1) his gain per cent, and
(ii) the number of locks he should sell to earn a profit of 45.
[Hint. Let the number of locks bought be the LCM of 8 and 12]
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Answer 1

Step-by-step explanation:

please refer to the attached file