1,068
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x + 178 = 302 Therefore, 302 - 178 = x x = 124
let the unknown no be x so, 178+x=891 transposing, x=891-178 x=713 unknown no is 713
15% = 0.15 15% off 178 = 178 - (0.15 x 178) = 151.3
4/10 x 178 = 71.2
178 x 145 890 7120 17800 25810