Step-by-step explanation:
Let Kim's sister age be x.
Kim's age 2x
<u>According to the question</u> :
2x + x = 42
X = 14
Kim's age = 28 years
Kim's sister's age = 14 years
Answer:
Step-by-step explanation:
4.5 is equal to nine halves because if you divide 9 you get 4.5
12%=(3+10%*x)/(20+x)
x=30
add 30 pounds of the second alloy
Use the volume of a cylinder equation, V = pi*r^2*h to find the volume of the cylinder. To find the answer to the second one, find the volume of the square and subtract the volume of the cylinder from it.
