Troy and his sister caitlin can earn money by choosing to do chores around the house . last month caitlin earned $5 more than twice what troy earned. if the sum of their earnings was $80 how much did caitlin earn that month

Caitlin equals 55

Step-by-step explanation:

t= the money troy earned

c =money caitlin earned

The sum of their earnings was 80

t+c = 80

last month caitlin earned $5 more than twice what troy earned

c = 2t+5

We have 2 equations and 2 unknowns

Substitute the second equation into the first

t+c= 80

t+2t+5 = 80

Combine like terms

3t+5 = 80

Subtract 5 from each side

3t+5-5 = 80-5

3t = 75

Divide by 3

3t/3 = 75/3

t =25

Now we need to calculate c

c = 2(25)+5

c = 50 +5

c =55

109 is the nearest whole number/final answer! : )

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b