Question

8. Asmall shopkeeper buys notebooks 10 for 400 and sells at 8 for 400. Find his profit or loss per cent.
9. If a car dealer sells an old car for 66,960, he will lose 7%. For what amount should he sell it so as to gain 7%?​

Answer 1

Step-by-step explanation:

CP of each notebook = 400/10 = ₹40

SP of each notebook = 400/8 = ₹50

SP > CP so its profit

$\implies$ $P= SP - CP$

$\implies$ $P=50-40$

$\implies$ $P=10$

$\implies$ $Profit\%={\Large\frac{Profit}{CP}}×100$

$\implies$ $P\%={\Large\frac{10}{40}}×100$

$\implies$ $\boxed{Profit\%=25\%}$

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