SOLUTION: Victor earns $3 an hour working after school and $4 an hour working on saturdays. Last week he earned $43, working a total of 13h. How many hours did he work on saturday?

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Victor earns $3 an hour working after school and $4 an hour working on saturdays. Last week he earned $43, working a total of 13h. How many hours did he work on saturday?      Log On


   

Question 54028This question is from textbook
: Victor earns $3 an hour working after school and $4 an hour working on saturdays. Last week he earned $43, working a total of 13h. How many hours did he work on saturday? This question is from textbook

Found 2 solutions by Nate, anumeha:
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
say ~>
x = amount of hours worked after school
y = amount of hours worked on saturday
x+%2B+y+=+13 or x+=+13+-+y
and
3x+%2B+4y+=+43
plug:
3%2813+-+y%29+%2B+4y+=+43
39+-+3y+%2B+4y+=+43
y+=+4
plug:
x+=+13+-+y
x+=+13+-+4+=+9
9 hours worked after school and 4 hours worked on saturday

Answer by anumeha(1) About Me  (Show Source):
You can put this solution on YOUR website!
let ,no. of hrs he worked on saturday=y
" " " " " " weekdays=x
we have x+y=13
also x=13-y (i)
now,
3x+4y=43
using equation (i)
3(13-y)+4y=43
39-3y+4y=43
y=4