Laura can finish payroll in 3 hours. it takes ben 5 hours to do the same job. If they work together, how long should it take the
m?
1 answer:
Answer:
15/8 hours .................
Step-by-step explanation:
Let L be Laura, and B be Ben. Then:
3L=1
5B=1
Next:
15L=5
15B=3
15(L+B)=5+3=8
15/8 (L+B)=1
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