Question

3. Ken always saves 60% of his income

His income in October was 45% less
than that in September. As a result, his savings in October decreased by $810.
What was his savings in September?​

Answer 1

$1800

Explanation:

Income in September

= x

Saving in September

= 60% of x

= 0.6x

Income in October

= 45% less than September

= x - (0.45x)

= 0.55x

Saving in October

= 60% of 0.55x

= 0.38x

Difference in Saving

= 0.6x - 0.38x

= 0.27x

Solve x

0.27x = $810

x = 810 ÷ 0.27

= $3000

Saving in September

= 0.6x

= 0.6 (3000)

= $1800