a) 60
b) 65
c) 70
d) 75
Answer: c
Explanation: Let the number be x
According to the question,
91 – $$\frac{{30{\text{x}}}}{{100}}$$ = x
9100 – 30x = 100x
9100 = 130x
x = $$\frac{{9100}}{{130}}$$
Hence, x = 70
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