Register
Two times michaels age plus three times Kathys age is 47. Kathy is also four years older than Michael. How old is Kathy?
142k views
2 votes
Two times michaels age plus three times Kathys age is 47. Kathy is also four years older than Michael. How old is Kathy?

User Cortes
by
7.8k points

2 Answers

4 votes
i think kathys age is 11

User Nxu
by
8.5k points
6 votes
Michael is m
Kathy is k

2m+3k=47
m+4=k

2m+3(m+4)=47
2m+3m+12=47
5m+12=47
5m=35

m=7
k=11
User Douwe Van Der Meij
by
9.0k points
← Prev Question Next Question →

Related questions

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Link Copied!