What is 40% of 250?

Question

Percentages commute, "x% of y" equals "y% of x", and one order is much easier here. Solve in your head. What is 40\% of 250? Aim: under 6 seconds.

Accepted Answer

Flip it: 40\% of 250 = 250\% of 40 = 2.5 	imes 40: 2.5 	imes 40 = 100. So 40\% of 250 = \mathbf{100}. Or straight: 10\% of 250 is 25, and 40\% = 4 	imes 25 = 100. Takeaway. a\% of b always equals b\% of a. Pick whichever direction gives the cleaner multiplication.

What is 40% of 250?

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