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Maths Puzzle
Numerical Ability
If Sally can paint a house in 4 hours and John can paint the house in 6 hours. How long will it take them to paint the house together?
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book Other Question
how do we solve the intersection pt (x,y) of d following equations/lines
20x + 20y >= 250
15x + 25y >= 375
18x + 12y >= 200
these three lines will intersect at a point, wha
In x^4 (x-3)^5/
(x+2)^2