Question

(8y + 3x)3 - (3x - 8y)3
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Answer 1

Answer:

48y is the answer

Step-by-step explanation:

(8y + 3x)3 - (3x - 8y)3

=(8y + 3x)3 + (8y - 3x)3

=(8y + 8y + 3x - 3x)3

=(16y)6

=48y

Answer 2

Answer:

Given :

M.P. = ₹680, Discount = 4%, Profit = 20%

To Find : C.P.

Solution :-

Discount (in rupees) =

$\frac{680 \times 4}{100} = 27.20$

S.P. = M.P. - Discount

S.P. = ₹(680 - 27.20)

S.P.= ₹652.80

C.P. =

$\frac{652.80 \times 100}{100 + 20} \\ = \frac{65280}{120} \\ = 544$

Hence, C.P. ₹544 Ans.