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Maths Puzzle
Numerical Ability
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?
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book Other Question
please reduce the fraction, w2 + 5w + 6 / w2 - w - 12
A. w-2/w-4
B. w+2/w-4
C. w+2/w+4
D. w-2/w+4
Can someone tell me how to solve the following problem:
7(2+3x)+8