What percent of 50 is 125? Use the percent equation. A. 125 = n(50); 2.5%

B. 50 = n(125); 40%

C. 125 = n(50); 250%

D. 50 = n(125); 0.4%

B 50=n(125) 40%

Step-by-step explanation:

math = 87

physics = 168

Brainliest, please!

Step-by-step explanation:

Variables:

m = math, p = physics

Equations:

m + p = 255

m = p - 81

Substitution:

m + p = 255

(p - 81) + p = 255

2p - 81 = 255

2p = 336

p = 168

Solving for m:

m + p = 255

m + 168 = 255

m = 255 - 168

m = 87

Checking with the other equation:

m = p - 81

87 = 168 - 81

87 = 87

So, math = 87 and physics = 168

Brainliest, please!