The candle maker makes a second batch of orange wax using the same ratio of yellow to red to white wax. She uses 7 quarts of red wax in the second
batch of orange wax.
How many total quarts is the second batch of orange wax?
quarts

35

Explanation:

The original ratio is made up of 10 parts

2 red + 5 yellow + 3 white = 10 total parts

Red wax is 2 of the 10 parts of the wax mixture.

= 35 quarts

the correct answer is:

this is an example of the writer telling through description rather than showing through dialogue.

sometimes writers like to explain explicitely what's happening instead of adding dialogues of the situations., which is the case in this passage,