The regular price of a computer is $1200 and the regular price of a printer is $300. The regular price of a computer is 1200 dollars and the regular price of a printer is 300 dollas. An electronics store has a promotion that offers a 40% 40 percent discount on the printer when the computer is purchased at the regular price. What is the total cost of the computer and the printer at the promotional price?

$1380

Step-by-step explanation:

The electronics store offers a 40% discount on the printer only when the computer is purchased at the regular price.

Discount on the Printer = 40% of $300 =0.4 X 300 =120

Promotional Price of the Printer = $300-120 =$180

Therefore, the total cost of the computer and the printer at the promotional price

=Regular price of a computer + Promotional Price of the Printer

=1200+180

=$1380

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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