exam
Maths Puzzle
Numerical Ability
A car takes on 22.7L of gasoline. How many microliter is that?
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exam Other Question
Bethany invested $2500, part at 8% per year and the rest at 12% interest per year. In one year, the parts earned equal amounts of interest. determine how much was invested at each rate.
How can I solve this by elimination method?
x-y=8
6+3y=-2x
And can I solve this in substitution method and get the answer x=18/5 and y=10/5