If 40% of k is 10 less than 1200% of 10, then k is:

Correct option is B

Given:

​40% of k is 10 less than 1200% of 10

Solution:

​40% of k = 1200% of 10 - 10

​$$\frac {40}{100}\times k =\frac {1200}{100}\times 10-10$$

0.4 k = 120 - 10

0.4 k = 110

k = $$\frac {110}{0.4}$$ = 275​