Question

A wise woman once said, "400 reduced by twice my age is 262." What is her age?

Answer 1

69

Explanation:

x - age of wise woman

2x - twice the age of wise woman

400 - 2x - 400 reduced by twice the age of wise woman

400 - 2x = 262

400 - 262 = 2x

138 = 2x

2x = 138

x = 69

Answer 2

331..?

Explanation:

262 = 2a-400

662 = 2a

331