Question 156

18.2% of 890 = ?

Solution

18.2% of 890

= (18.2 *890)/100

= $$18.2 \times 8.9$$

= $$2 \times 9.1 \times 8.9$$

= $$ 2 \times [(9-0.1)(9+0.1)] $$

=$$ 2 \times (9^{2} - 0.1^{2})$$

= $$2 \times (81 - 0.01)$$

= $$ 2 \times 80.99 $$

=161.98


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