Answer:
Malik substituted 60 for y instead of x.
Explanation:
According to Malik’s solution.:
2/5x - 4y = 10
2/5x - 4(60) = 10
2/5x - 240 = 10
Find Malik’s complete solution in the picture below :
From the question, x is given as 60 and not y ;
In the solution provided by Malik, he substituted 60 for y ; and that is where the mistake lies, he should have substituted 60 for x and not y
