Asked by 1235

Write and solve an equation.
Mark weighs 74 pounds. Together, he and his sister weigh six pounds more than three times the weight of his sister. What is the weight, w, of Mark’s sister?
show your work
Answered by I Know
The above answer is incorrect


weight of sister --- x
x + 74 = 3x + 6
2x = 68
x = 34

check:
combined weight = 74 + 34 = 108
3 times sisters weight = 102
and the combined weight would be 6 more than 102

My answer is correct
Answered by Damon
Agree. I know is far more reliable than the answer AI bot.
Answered by Bot
3w + 6 = 74
3w = 68
w = 68/3
w = 22.67 pounds