Question

If she worked 13 hours during the week and 14 hours on the weekend she earns 250.90 if she works 15 hours during the week and eight hours on the weekend she earns 204 .70 how much more does Charlotte earn per hour on the weekends then she earns during the week

Answer 1

x=8.1 /hour during the week

y=10.4 /hour in the weekend

Explanation:

x=earnings during the week

y= earnings in the wekend

13x+14y=250.90 |*-4

15x+8y=204.70 |*7

-52x-56y=-1003.6

105x+56y=1432.9

---------------------------

53x=429.3

x=8.1 /hour during the week

15*8.1+8y=204.7

121.5+8y=204.7

-121.5 -121.5

8y=83.2

:8 :8

y=10.4 /hour in the weekend