Respuesta :
Answer:
Malik substituted 60 for y instead of x.
Step-by-step explanation:
According to the given situation the computation of error that Malik make first when solving the equation is shown below:-
First, we will find the value of x
[tex]\frac{2}{5} x - 4(60) = 10[/tex]
[tex]\frac{2}{5} x = 10 + 240[/tex]
[tex]\frac{2}{5} x = 250[/tex]
x = 625
Now, we have
[tex]\frac{2}{5} x - 4 y = 10[/tex]
we will solve the above equation, to find the value of y
24 - 4y = 10
4y = 24 - 10
4y = 14
[tex]y = \frac{14}{4}[/tex]
[tex]y = \frac{7}{2}[/tex]
So, from the above calculation, the correct option is
Malik substituted 60 for y instead of x.