Asked by N
It takes Sisyphus two days to carry a pile of rocks up a hill. When I helped out, it took us only 1.2 days to carry all of the rocks. How long would it take me to carry the rocks by myself?
Answers
Answered by
bobpursley
rates add:
books/1.2=books/my time + books/2days
multiply both sides by
my time*1.2*2/books
2*mytime=1.2*2+mytime*1.2
mytime(2-1.2)=2.4
my time=3days
books/1.2=books/my time + books/2days
multiply both sides by
my time*1.2*2/books
2*mytime=1.2*2+mytime*1.2
mytime(2-1.2)=2.4
my time=3days
Answered by
un
1/2 + 1/x=1/1.2
1.2x+2.4=2x
.8x=2.4
x=3 days working by yourself. ☺☺☺☺
1.2x+2.4=2x
.8x=2.4
x=3 days working by yourself. ☺☺☺☺
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