Question 548702
Working alone, emma can clean the stable in 8 hours. If Victoria helps her, they can complete the job in 3 hours. How fast can Vicctoria clean the stable alone?
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let x=hours Victoria can clean the stable alone
1/x=Victoria's work rate
1/8=Emma's work rate
1/3=Work rate when working together
sum of individual work rates=work rate working together
..
1/8+1/x=1/3
1/x=1/3-1/8
1/x=8/24-3/24=5/24
x=24/5
ans:
hours Victoria can clean the stable alone=24/5