cantidad de objetos 10 botellas de plastico benficos se ahorran 200 wtts de energia Que tipo de relacion representa el numero de botellas recicladas y la cantidad de watts que se ahorran. ?
number of objects 10 beneficial plastic bottles saved 200 watts of energy What type of ratio represents the number of recycled bottles and the amount of watts saved?
Answers
Given : number of objects 10 beneficial plastic bottles saved 200 watts of energy
To Find : what kind of variation represents the number of recycled bottles and the amount of watts saved?
Solution:
Direct variation if a variable increases then other variable also increases with a constant factor y = kx
inverse variation if a variable increases then other variable decreases with a constant factor xy = k
Joint variation is a relationship between atleast three variables, where one variable varies directly with all other variables.
y = kxz
Combined Variation is a relationship between three or more variables where it is in direct variation with few variable and in inverse variation with other variable y = kx/z
More the number of bottles recycled more the amount of watts saved
amount of watts saved ∝ number of bottles recycled
=> amount of watts saved = k ( number of bottles recycled)
200 = k (10)
=> k = 20
=> amount of watts saved = 20 (number of bottles recycled)
This is a direct variation.
10/200 = 1/20 is proper fraction
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