Wolfrich lived in Portugal and Brazil for a total period of 14 months in order to learn Portuguese.
He learned an average of 130 new words per month when he lived in Portugal and an average of 150 new
words per month when he lived in Brazil. In total, he learned 1920 new words.
How long did Wolfrich live in Portugal, and how long did he live in Brazil?
Wolfrich lived in Portugal for
months and lived in Brazil for
months.

78.59 is the mean

step-by-step explanation:

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5