If 40% of a number x is added to another number y, then y becomes 125% of its previous value. Find…
The condition is 0.4x+y=1.25y, so 0.4x=0.25y and x/y=0.25/0.4=5/8 (for nonzero y). The ratio 8/5 reverses numerator and denominator; equality and 3/4 do not satisfy the…
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If 40% of a number x is added to another number y, then y becomes 125% of its previous value. Find which of the following is true regarding the values of x and y?
Answer and explanation
Correct answer C
The condition is 0.4x+y=1.25y, so 0.4x=0.25y and x/y=0.25/0.4=5/8 (for nonzero y). The ratio 8/5 reverses numerator and denominator; equality and 3/4 do not satisfy the equation.
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