​If 35% of x is 140, then what is the value of x?​

Correct option is B

Given:

35% of x is 140

Solution:

​$$\frac{35}{100} \times x = 140$$​​

​$$\frac{7}{20}\times x = 140$$ 

x = $$140 \times \frac{20}{7}$$ 

x = $$\frac{140 \times 20}{7}$$ = $$\frac{2800}{7}$$ = 400

x = 400

Thus, correct answer is (b) 400