A textbook store sold a combined total of 255 physics and math textbooks in a week. The number of math textbooks sold was 81 les

Question

3 years ago

11

s than the number of physics textbooks sold. How many textbooks of each type were sold?

1 answer:

dimulka [17.4K] · Answer 1 · 2022-07-15T19:53:20+03:00

Answer:

math = 87

physics = 168

<em>Brainliest, please!</em>

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

<em>Brainliest, please!</em>