A mother is 13 years older than twice her daughter's age. If the difference of their ages is 32, how old is each person?
1 answer:
You might be interested in
We have been given that the volume of a cone is 113.04 cubic mm. We are asked to find the approximate volume of a sphere that has the same height and a circular base with the same diameter.
We know that volume of cone is .
The height is equal to the diameter. We know that diameter is 2 times radius, so we can represent this information in an equation as:
Upon substituting in volume of cone, we will get:
We know that volume of sphere is .
Upon comparing volume of cone with volume of sphere, we can see that volume of sphere is 2 times the volume of cone.
Since , so volume of sphere would be:
Therefore, volume of sphere would be 226.08 cubic mm.
Answer:
C) 160
Step-by-step explanation:
Set up a proportion:
=
Cross multiply and solve for x:
15x = 3600
x = 240
This means in 400 marbles, 240 are purple.
To find how many are not purple, subtract 240 from 400:
400 - 240
= 160 marbles
So, 160 marbles are not purple