Problema Solution
A textbook store sold a combined total of
215
biology and physics textbooks in a week. The number of physics textbooks sold was
43
less than the number of biology textbooks sold. How many textbooks of each type were sold?
Answer provided by our tutors
Let 'x' represent the number of biology textbooks, then 43-x represents the number of physics textbooks.
215=x+(43-x)
x=129
215-129=86
So 86 physics textbooks and 129 biology textbooks.