Answer:
Approximately by 16 % percent, she should reduce the usage of the laundry every month.
Step-by-step explanation:
Rate of laundry(R)=19%
To find the percentage of reduction in the usage of laundry every month
Solution:
Using formula
Reduction in consumption so as not to increase the expenditure can be calculated as:
Reduction % of usage= [tex]\frac{R}{R+100} x100 percentage[/tex]
=19/19+100 x100%
=19/119 x 100%
=15.97%
=approx. 16%
Therefore, Simi should reduce the usage of the laundry every month approximately by 16%.
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