Question

How can I find 30% of 2140?

Answer 1

30% of 2140 is 642

Convert percentage into a decimal: 30%/100 = 0.3
Multiply decimal by 2140: 0.3 × 2140 = 0.3 <-- our answer.

Answer 2

'is' in mathematics means equal
'of' in mathematics means multiplication

30% can also be written as 30/100


`x = (30)/(100) * 2140\\\\x = (3)/(10) * 2140\\\\x = 3 * 214\\\\\boxed{\bf{x=642}}`