How do you write an equation represents this situation: Charlie worked 1.5 hours less than Dirk. Together, they worked a total of 25 hours. Dirk worked h hours?

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Answer 1 · 2016-04-30T16:32:18

Dirk worked 13.25 hours

Since Charlie worked #1.5# hours less than Dirk, we can represent Charlie as #Dirk - 1.5#. The equation is then:

#Dirk - 1.5 + Dirk = 25 hours#

#2Dirk = 26.5 hours# and #Dirk = 13.25hours#

We can check this by plugging #13.25 hours# back into the equation:

#13.25 - 1.5 + 13.25 = 11.75 + 13.25 = 25 hours#