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Sindrei [870]
3 years ago
11

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

s than the number of physics textbooks sold. How many textbooks of each type were sold?
Mathematics
1 answer:
dimulka [17.4K]3 years ago
5 0

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>

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