A textbook store sold a combined total of 308 history and physics textbooks in a week. The number of physics textbooks sold was 54 less than the number of history textbooks sold. How many textbooks of each type were sold?
Number of history textbooks sold:
Number of physics textbooks sold:
Let x = number of history textbooks sold
x - 54 = number of physics textbooks sold
Total textbooks sold:
x + (x - 54) = 308
2x - 54 = 308
2x = 362
x = 181
Number of history textbooks sold: 181
Number of physics textbooks sold: 181 - 54 = 127
Thus, 181 history textbooks and 127 physics textbooks were sold.