Respuesta :
His age is 70 years. We can use the information to form an equation and then solve it. The equation would be 400 - 3x = 190 and then when you solve it, you get 70.
Answer:
Let's have x be his age.
He said that 400:
400 reduced by 3 times my age:
400 − 3x
is 190:
=> 400 − 3x = 190
=> 3x = 400−190
=> x= 210
=> 210÷3
=> 70
