Answer:
6.25 kg cement, 7.5 L water
Step-by-step explanation:
2.5 kg cement / 4 kg sand = x kg cement / 10 kg sand
x = 6.25
3 L water / 4 kg sand = y L water / 10 kg sand
y = 7.5
1. -> B. ;
2. -> C. ;
3. -> B. ;
4. -> A.. ;
Using simple interest, it is found that Devin will pay $60,125 altogether.
The amount paid in <u>simple interest</u> is:

In which:
- P is the principal.
- r is the interest rate, as a decimal.
- t is the time, in years.
In this problem:
- Owes $26,000 in student loans, thus

- Interest rate of 8.75%, thus

- Paid off in 15 years, thus
.
The amount he will pay is of:

![A = 26000[1 + 0.0875(15)]](https://tex.z-dn.net/?f=A%20%3D%2026000%5B1%20%2B%200.0875%2815%29%5D)

Devin will pay $60,125 altogether.
A similar problem is given at brainly.com/question/13176347
Answer:
X=3, y=5
Step-by-step explanation:
3x + y = 14 equation 1
y=5 equation 2
3x + 5 = 14. substitute value of y from equation 2 into equation 1
3x=9
x-3