3.Josh has a huge marble collection. He counts 280 marbles that are red, and he estimates that this is about 10% of his collection.
A.Write and solve a proportion to estimate the total number of marbles Josh has.
Look at the total number of marbles from the one group, and look at the percentage that is estimated for the collection. You should be able to figure it out from there.
is the correct answer 2800 marbles
Yes. That would be correct.
No problem. I'm glad to be of help.
280 of 10% ??
To estimate the total number of marbles that Josh has, we can set up a proportion using the information given.
Let x be the total number of marbles that Josh has.
We are told that 280 marbles is about 10% of his collection. This means that 280 marbles is equal to 10% (or 0.10) of x.
Setting up the proportion:
280/x = 0.10/1
To solve for x, we can cross multiply:
0.10 * x = 280 * 1
0.10x = 280
Now, we can solve for x by dividing both sides of the equation by 0.10:
x = 280 / 0.10
x = 2800
Therefore, the estimated total number of marbles that Josh has is 2800.