Solve the following for b: a = 5b + 8c

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab