SOLUTION: Mark weighs 74 pounds. Together, he and his sister weighs six pounds more than three times the weight of his sister. What is the weight,of marks sister
Algebra.Com
Question 311320: Mark weighs 74 pounds. Together, he and his sister weighs six pounds more than three times the weight of his sister. What is the weight,of marks sister
Answer by Miceandwine(15) (Show Source): You can put this solution on YOUR website!
Mark weighs 74 pounds. Together, he and his sister weighs six pounds more than three times the weight of his sister. What is the weight,of marks sister.
Okay, lets get started. First, we need to set up an equation. Let's call his sister's weight "x" for now.
74+x=3x+6
Now, let us subtract 6 from both sides.
74-6+x=3x+6-6 which equals
68+x=3x
Now, lets subtract an x from both sides
68+x-x=3x-x which equals
68=2x
Finally, we should divide both sides by 2 to get rid of the 2 in front of the x.
68/2=2x/2
x=34, so his sister's weight is 34 pounds.
I hope I helped!
RELATED QUESTIONS
Jason weighs 36 pounds. Together he and his sister weigh four pounds more than three... (answered by stanbon)
Billy weighs 140 pounds more than his sister Nancy. Their combined weight is 160 pounds.... (answered by ewatrrr)
Kyle weighs twice as much as his younger sister Suzanne and 10 pounds less than his older (answered by ichudov)
Klye weighs twice as much as his younger sister Suzanne and 10 pounds less than his older (answered by Deina)
Solve this problem on paper using all four steps.
Ted weighs twice as much as Julie.... (answered by mananth,JBarnum)
anna weighs 3kg more than her sister and their total weight is 105kg,what is the weigth... (answered by alicealc)
Every year, the Parker brothers get together. The combined weight of the Parker brothers... (answered by JulietG)
a man weighs five sixths of his weight plus 30 pounds. How much does he... (answered by Fombitz)
Translate the following situation into an equation. Do not solve.
“Suppose a crate of... (answered by ewatrrr)