Question

Margaret purchased a new bar of soap. Three days after she originally used the soap, she was curious how much soap per day she was using. She decided to weigh her soap and found that the bar was 103 grams. Four days later she re-measured the same bar of soap and recorded a weight of 80 grams. Assuming that Margaret uses the same amount of soap daily (and that she used the soap daily), write an equation that shows the amount of soap remaining after d days of use.

Answer 1

The original amount was 103 grams. After using the remaining for one day the amount of soap was 80 grams.

So the equation for that would be 103-80=23

That means each day margaret spends 23 grams of soap.

d is the number of days and y is for the amount of soap spent in those days, therefore the equation would be y=-103-23d.

Answer 2

Ok thank you so much for your help

Answer 3

Not a problem.