Question

please only correct answer​

Answer 1

1. The marked price of the dress is ₹2400. The shopkeeper gives a discount of 20%. what is selling price of the dress?

Given :

• The marked price of a dress is ₹2400.
• The shopkeeper of 20%.

To Find :

• what is selling price of the dress ?

Solution :

• The marked price(M.P)of the dress is the cost price(C.P) of the dress. The selling price(S.P) of the dress can be found by reducing discount price from the marked price of the dress.

$\sf{\boxed{\text{Discount Price}= \frac{\text{Discount percentage }}{100}\times\text{M.P}}}$

$\displaystyle\implies\text{Discount Price}= \frac{20}{100}\times 2400$

$\implies {\text{Discount Price = ₹480}}$

$\boxed{\text{Selling Price = Marked Price - Discount}}$

$\implies ₹2400 - ₹480$

${\textsf{Selling Price of the dress is ₹1920}}$

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2.Simplify $\sf{(a+b)(2a-3b+c)+(2a-3b)c}$

${\implies\sf{(a+b)(2a-3b+c)+(2a-3b)c}}$

${\implies \sf{2a^2-3ab+ac+2ab-3b^2+bc+2ac-3bc}}$

$\implies \sf{2a^2-3ab+2ab+ac-3b^2+bc-3bc}$

$\boxed {2a^2-3b^2-ab+3ac-2bc}$