Question

15 PTS I NEED HELP IMMEDIATLEY!! A textbook store sold a combined total of 447 biology and sociology textbooks in a week. The number of sociology textbooks sold was 63 less than the number of biology textbooks sold. How many textbooks of each type were sold?

Answer 1

Answer: 192 sociology textbooks, 255 biology textbooks

Explanation:

Let the number of biology be x, and the number of sociology be x

The number of the sociology textbook is x+63

So the equation is

x + x + 63 = 447

2x = 384

x= 192 sociology textbooks

To find the number of biology textbooks, just take 447- 192 = 255 biology textbooks

Answer 2

biology = 255 ; sociology = 192

Explanation:

b + s = 447

s = b - 63

b + b - 63 = 447

2b = 447 + 63

2b = 510

2/2 b = 510/2

b = 255

s = 255 - 63

s = 192