To solve this problem use proportions.
Find x
x/4 = 4/10
Solve for x
x = (4 x 4) / 10
Simplification
x = 16/10
Result
x = 1.6
Find y
y/2 = 10/4
Solve for y
y = (10 x 2) / 4
y = 20/4
y = 5
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