- #1

zak100

- 462

- 11

## Homework Statement

Problem in evaluating a single variable equation

## Homework Equations

(10 + x)/ (40+x) * 100 = 60

## The Attempt at a Solution

(1)[/B]

(10 + x)/ (40+x) * 100 = 60

1000 + 100x = 2400 + 60x

100x -60 x = 2400-1000

40x = 2300

x= fractional value

(2)

However if i solve it using:

(10 + x) /(40 +x) = 60/100

(10 + x)/(40 + x) = 3/5

50 + 5x = 120 + 3x

2x= 70

x = 35 (integer value)

Some body please guide me what's wrong in my first calculation i.e. (1).

Zulfi.