A wise man once said, "400 reduced by 3 times my age is 151." What is his age?

Question

1370 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-05-03T11:38:13

The wise man is 83 years old.

Let's assume his age is x then,

Note: Blue means additions or substractions to both sides.

#400 - 3x = 151#

#400 color(blue)( - 151) - 3x = 151 color(blue)(- 151)#

#249 - 3x = 0#

#249 - 3x + color(blue)(3x) = 0 + color(blue)(3x)#

# 249 = 3x#

#249/color(blue)3 = (3x)/color(blue)3#

# 83 = x #