New Price = .88(Old Price)

$6.82(ii)If the sale price of a particular book is $66, what was its original price?

2) Use the index laws to simplify the following.

(i) a(9a^2 b)^2 / 3a^4 b^ 3

(i) 4x^-2/y^-3 / xy^2 / 3x^-2

Looking forward to collaborating to solve these issues.

Thanks

Can you simplify the last one?