exam
Maths Puzzle
Numerical Ability
one-half of pias age two years from now plus one-third of her age three years ago is 20 yrs. How old is she now?
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exam Other Question
Write in standard notation.
8.129 X 10 -6
Find values for m and b in the following system such that the solution to the system is (-3,4)
5x+7y=b
mx+y=22
m=
b=