As it is reduced by 10%, £810 is 90% of the original cost.
So you do (810 / 90) x 100 = £900
Answer:
<em>You should deposit 700 pieces today if you want to use the total amount to pay the fees.</em>
Step-by-step explanation:
Suppose, you should deposit
number of pieces today.
<u>Formula for simple interest</u>:
, where I = Amount of interest, P= Initial deposit amount, r= rate of interest in decimal form and t= time duration.
Here, the
number of pieces is deposited at an annual interest rate of 10% for three years. That means,
and ![t= 3](https://tex.z-dn.net/?f=t%3D%203)
Using the above formula, we will get.......
![I= P*0.10*3 = 0.3P](https://tex.z-dn.net/?f=I%3D%20P%2A0.10%2A3%20%3D%200.3P)
Given that, <u>you need total 910 pieces </u>of muggle-money to study after three years. So, the equation will be......
![P+I= 910\\ \\ P+0.3P=910\\ \\ 1.3P=910\\ \\ P=\frac{910}{1.3}=700](https://tex.z-dn.net/?f=P%2BI%3D%20910%5C%5C%20%5C%5C%20P%2B0.3P%3D910%5C%5C%20%5C%5C%201.3P%3D910%5C%5C%20%5C%5C%20P%3D%5Cfrac%7B910%7D%7B1.3%7D%3D700)
So, you should deposit 700 pieces today if you want to use the total amount to pay the fees.
Answer:
-8
Step-by-step explanation:
-4 both sides & 16-4 is 12.. -3/2x equals 12 so to solve for x, you would multiply 2 by both sides. You end w -3x equals 24. You then divide -3 both sides and 24/-3 is -8... hopee that helps? :)