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?
1 answer:
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>
You might be interested in
Her answer represents "-3.7 less than 4 times a number is 11.9". The correct equation should be -3.7n-4=-11.9.
Well, I would just reverse it. It seems you just have to reverse the whole problem.
Answer:
Part 1: 1 mile.
Part 2: 1.32 mph.
Step-by-step explanation:
You need to make this is all languages if you want help thank you . :)
