Question 1152426
Gina can paint 7 fence panel in 5 hours,
g paints 7/5 panels per hr
:
 Lim can paint 6 fence panels in 4 hour.
L paints 6/4 panels per hr
:
They both work together and paint 17 panels, at the same rate how long does it take to paint those 17 fence panels
let t = no. of hrs
{{{7/5}}}t + {{{6/4}}}t = 17
multiply by 20, get rid of the denominators
20*{{{7/5}}}t + 20*{{{6/4}}}t = 20(17)
cancel the denominators
4(7t) + 5(6t) = 340
28t + 30t = 340
58t = 340
t = 340/58
t = 5.86 hr or 5 + .86(60) = 5 hrs 52 min