Please help me solve this I will give 100 points and give you Brainiest title ! It’s question 8 and please show your work!

Answer:
24
Step-by-step explanation:
0.25 * 16 = 4
40 - 4 = 36
36 divided by 1.5 = 24
[tex]\\ \rm\hookrightarrow c=\dfrac{40-1.5r}{0.25}[/tex]
[tex]\\ \rm\hookrightarrow 16=\dfrac{40-1.5r}{0.25}[/tex]
[tex]\\ \rm\hookrightarrow 40-1.5r=16(0.25)=4[/tex]
[tex]\\ \rm\hookrightarrow 1.5r=36[/tex]
[tex]\\ \rm\hookrightarrow r=36/1.5[/tex]
[tex]\\ \rm\hookrightarrow r=24[/tex]