You said that P = I · R · T
Divide each side by I · R : P / (I·R) = T
Answer:
5%
Step-by-step explanation:
You sum the lost excess weight: 50% + 20% + 25% = 95%. Meaning that she lost 95% of the excess weight. It remained just 5% to lose.
Answer:

Step-by-step explanation:
Given


Required
The cost of units used
First, calculate the number of units used.



Next, multiply the units used by the cost per units,
Since the cost per unit is not given, we assume that it is x.
So, the total cost is:



we are given to simplify

Open the bracket and write the like terms together

when the bases are same then the exponents gets added

The answer is y equals 10