The sale price of an item is $160 after a 20% discount. What was the original price of the item?

The original price of the item is $200.

Step-by-step explanation:

Let the original price be 'x'.

The sale price of an item is $160 after a 20% discount.

i.e. original price - 20% of original price = $160

x-20/100x=160

x-0.2x=160

0.8x=160

x=160/0.8

x=200

Therefore, the original price of the item is $200.

hope this helped :))

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,