Problema Solution
By what percent will the product of two numbers decrease if one of them is increased by 30% and the other is decreased by 30%?
Answer provided by our tutors
two unequal numbers must be caste in relative numbers; if both numbers are equal (let 'x' be the value) then:
(xx+0.3x)/(xx-0.3x)
which would still not obtain a numeric value:
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(x+0.3)/(x-0.3)