exam
Maths Puzzle
Numerical Ability
Bob can do a job in 1 hour, John can do the same job in 2 hours, Lisa can do the same job in 3 hours. How long would the job take if they all work together?
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exam Other Question
In my class today, we learned rates. Here is one of my problems: 55mi/h=?ft/s I have no clue what to do. I wrote out 55mi * ____ = ____ft
1 h s
What am I supposed to do next?
-xy2
x3y2 my ? is if you first eliminate the y2 or you subtract the -x to x3?