Answered

A number increased by 2/5 of it becomes 210. What is the number?

Sagot :

Let x be the number.

x + (2/5)(x) = 210

LCD: 5
(5)x + (5) (2/5)(x) = 210(5)
5x + 2x = 1,050
7x = 1 050
7x/7 =  1 050/7
x = 150

ANSWER: The number is 150.

Check:
150 + (2/5)(150) = 210
150 + 60 = 210
210 = 210