Question

A seller sell a watch at 2400₹ getting a loss of 20℅ on what price he must sell it to make a profit of 15 ℅?​

Answer 1

$\huge\mathfrak{\bf{\underline{\underline{\blue{Answer \ :}}}}}$

I will first find the %.

Now for 20% profit means article of 20 is sold at 24, and 20% loss means article of 30 sold at 24. So total CP is 50 and total SP will be 48. So there is loss of 4%.

In question given above total SP is 4800 but I have taken 48. Hence CP as per question should be 5000 (100 times of what I have initially taken). So total loss is 4% of 5000 that is 200.

These all are mental calculations, just by reducing problem to simple numbers that can be easily calculated mentally.

Let me know

Thanks.