Final answer:
Shandra used 12 crayons for her art project. After her friend used 1 more crayon, there are 35 crayons left in the box.
Step-by-step explanation:
To find out how many crayons are left in the box, we first need to determine how many crayons Shandra used for her art project. Shandra used 25% of the 48 crayons, which is equal to 0.25 * 48 = 12 crayons.
After Shandra used 12 crayons, she has 48 - 12 = 36 crayons remaining in the box.
Next, we need to determine how many crayons Shandra's friend used. Her friend used 5% of the remaining crayons, which is equal to 0.05 * 36 = 1.8 crayons. Since we can't have a fraction of a crayon, we need to round down to the nearest whole number. Therefore, Shandra's friend used 1 crayon.
The number of crayons left in the box is the number of crayons remaining after Shandra's friend used 1 crayon, which is 36 - 1 = 35 crayons.