Well, isn't that just a happy little math problem we have here! To find n, we can simply divide 450 by 15. When we do that, we find that n equals 30. Just like painting a beautiful landscape, sometimes all we need is a little bit of math to reveal the hidden beauty in numbers.
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For example, 1 x 450.
x = 15 - N.
10.515% of 70: put n over 70 equals 15 over 100n ----------15--- equals ---- then cross multiply n x 100 and 15 x 7070---------100which would be 100n and 1050then divide100n --------1050------ equals ------- n equals 10.5%100 -----------100
n X .15 = 9 9 / .15 = n 9 / .15 = 60
n + (2 x 3) = 21 Therefore, n = 21 - (2 x 3) n = 15