120% of 3125 – 90% of x = 150

Correct option is C

Given:

120% of 3125− 90% of x=150

Solution:

​120% of 3125 − 90% of x=150

​$$\frac{120}{100}\times3125−\frac{90}{100} \times x=150$$

1.20 $$\times 3125 - 0.9x =150$$​​

3750 - 150 = 0.9x

3600=0.9x

x = $$\frac{3600}{0.9} = 4000$$​