Marco polo bought 40 skins for 8 lira? what was the rate in skins per lira and in liras per skin?

5 skins per lira

⅕ liras per skin (⅕ = 0.2)

Step-by-step explanation:

skins : liras

40 : 8

X : 1

1 : Y

40/8 = X/1

X = 5 skins per lira

40/8 = 1/Y

Y = 8/40

Y = ⅕ or 0.2 liras per skin

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google