Question

Copy and Complete

A) price (increased or decreased) by %
B) price (increased or decreased( by %

Answer 1

a) Price increased by 75%

b) Price decreased by 42.85% (or 43% approximate)

Explanation:

$ 40 increased by ____ % to $70

`Percentage\ increase = (difference)/( original) * 100`

`= (70 - 40 )/(40) * 100\\\\=(30)/(40) * 100\\\\= 75 \%`

$70 decreased by ______ % to $40

`Percentage \ decrease = (difference )/( original ) * 100`

`= (70 - 40 )/(70) * 100 \\\\= (30)/(70) * 100\\\\=42.85 \%`