Question

The cost price of 18 notebooks is equal to the selling
price of 15 notebooks, find the gain percent.​

Answer 1

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Step-by-step explanation:

Cost price of 18 notes books =x Rs (let)

Therefore the cost price of 15 books is

=15x/18=5x/6 Rs

Now selling price is x Rs

Therefore... Profit amount

=(x-5x/6)=x/6 Rs

Therefore profit percentage =[(x/6)/x]×100%

=100/6%=50/3%