In a sale, jen buys a laptop for 351.55. this price is 21% less than the price before the sale. calculate the price before the sale.

Let $x be the price before sale. This price is 100%. If in a sale, Jen buys a laptop for $351.55 that is 21% less than the price before the sale, then this price is 100%-21%=79%.

Consider proportion

$x - 100%,

$351.55 - 79%,

that is mathematically

Find x:

the price before the sale was $445.

x=12 units bd= 10 units

step-by-step explanation:

area = length x width

length = 2 x width

32 = 2 x width x width

32 = 2 x width^2

36 = width ^2  

width = 6

length = 12

area is 32

perimeter = 2 x 12 + 2 x 6 = 24 + 12 = 36

step-by-step explanation: