first you divide...
242 divided by 10 equals 24.2
so each book cost $24.20
then you take 24.2 and times it by 2
24.2 times 2 equals 48.4
so the 2 books he gave to his friend cost $48.40
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$4.00 because
$15 - $7 = $8 than divide it by 2 which gives the $4 dollars for each 2 people
The equation you have to solve is 1.50 + (0.75 • 6). First, you solve what is in the parenthesis, 0.75 • 6 = 4.50. Now you simply add 1.50 and 4.50 to get $6, the total cost for 7 hours worth of parking.
Let us assume that the age of Janet's sister is = x
Then the age of Janet = x + 5
Now we also know that their combined age is equal to 51 years. Then we can write the equation as
x + (x + 5) = 51
2x + 5 = 51
2x = 51 -5
2x = 46
x = 46/2
= 23
So the age of Janet = x + 5
= 23 + 5
= 28 years
So the age of Janet's sister is 23 and Janet's age is 28
For example,
7.2, 4.3, 13.9
