Question

5. The table shows the colors and number of kites of the first 30 kites sold at a store. Predict how many white kites will be sold if a total of 72 kites are sold.


Color Number of Kites
White 5
Yellow 10
Green 7
Orange 8

Answer 1

So this is a problem of proportions.
They're asking you if you sell the 72 kites so that the different colors are as popular relative to one another as when you sold the 30 kites, how many white kites will you sell.

Phrased differently, they're saying: When you sold 30 kites, you sold 5 white ones.
If you sell 72 kites, how many white ones do you expect to sell?

So call the number of white kites we're expecting to sell N.
Then the ratio of N white kites to 72 total should be
the same as 5 white kites to 30 total.
Written explicitly, N/72 = 5/30.

Solve this to get N.