Let the number be A. Then: A + 2A – 5.255 =415.33 3A – 5.255 = 415.33 3A = 415.33 + 5.255 3A = 420.585 A = 420.585 / 3 A = 140.195 The number is 140.195. Replace all A's in equation (1) to see if I'm right. And, I am.

claire7752:
1 year ago
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Last edited at 12:00PM on 11/2/2012

Let n = the number 2n - (n + 2.255) = 415.33 n - 2.255 = 415.33 + 2.255. +2.255 n = 417.585. ANSWER 1. OR The problem could be interpreted n + (2n - 5.255) = 415.33 3n - 5.255 = 415.33 +5.255. + 5.255 3n = 420.585 /3. /3 n = 140.195. ANSWER 2