Question

1. A natural number, when increased by 12, equals 160 times its reciprocal. Find the number.

Answer 1

20

Explanation:

Let x represent our numbewr

x + 12 = 160/x

x^2 + 12x -160 = 0

(x-20(x+8) = 0

x = -8,20

20 is the only natural number solution.