Rosa pinta por la mañana los 8/20 de una valla; por la tarde pinta los 10/25 de los que queda. Al final quedan 72 metros cuadrados sin pintar. Halla razonadamente los metros cuadrados que tiene la valla

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

don't give

take it once

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