exam
Maths Puzzle
Numerical Ability
A drain can empty a swimming pool in 8 days. A second drain can empty the same pool in 4 days. In how much time will the two drains working together empty the pool?
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exam Other Question
If the sides of a square are decreased by 3cm, the area is decreased by 81 cm^2. What were the dimentions of the original square?
My answer for this one was 15cm by 15cm. Is this correct?
Thanks.
Problem#18
Write each fraction in simplest form
(-15x^3y^3)/(-20xy^4)
Problem#24
Write each expression in simplest form
(4x-28)/(5x-35)
Problem#36
Write each expression