Question

400=u×10+1/2×5×10×10​

Answer 1

Answer:

3999.9 is correct answer man

Answer 2

Answer:

$400 = u \times 10 + \frac{1}{2} \times 5 \times 10 \times 10$

1. Firstly, u × 10 = 10u
2. 10u + ½ = 10/2
3. 10/2 × 5 = 50/2
4. 50/2 × 10 = 500/2
5. 500/2 × 10 = 5000/2