Em uma roda de amigos, Jorge, Edson e Geraldo contam fatos sobre suas irmãs. Sabe-se que Jorge e Edson mentiram e Geraldo falou a verdade. assinale qual das proposições é VERDADEIRA:
a) "Se Geraldo mentiu, então Jorge falou a verdade"
b) "Edson falou a verdade e Geraldo mentiu"
c) " Se Edson mentiu, então Jorge falou a verdade"
d) " Jorge falou a verdade e Geraldo mentiu"
e) "Edson mentiu e Jorge falou a verdade"

a is the right answer

answer

step-by-step explanation:

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true