Answer
Answer: 511 calories
Work Step by Step
Let's assume the x is calories burnt in 45 minutes .
Now, we will write the proportion for the given details.
$\frac{284}{25} = \frac{x}{45}$
$284\times45 = x\times25$ (cross multiply)
$25 x = 12780$
$x = 511.2 \approx 511 $ (divide by 25)
Person will burn 511 calories with 45 minutes of workout.