I'm assuming you want your final answer to be in inches. First start off this problem by converting everything to inches to make it easier.
There are 36 inches in a yard, so to find the number of inches in a certain number of yards you would multiply the number of yards by 36 inches.
Let's start by finding the amount of inches that make up 8 yards and 7 yards. Multiply 8 yards by 36 inches and 7 yards by 36 inches, then rewrite the problem to show the converted form.
Now let's convert the feet on the right side of the expression. There are 12 inches in a foot, so multiply the amount of feet by 12 inches.
Rewrite the problem with the converted amounts.
Add the inches together on both sides of the equation.
Subtract 284 from 292. Your final answer is:
Answer:
Cost of one book is $1.75.
Step-by-step explanation:
Let the cost of one book is $x.
Alana and Petra brought 5 + 4 = 9 books together.
⇒ Cost of book brought by them together is $9x
Angus brought 19 books and he gets $10 discount.
⇒ He paid for book is $19x - 10
But also Angus spent $7.5 more than Alana and Petra
⇒ 19x - 10 = 9x + 7.5
⇒ 10x = 17.5
⇒ x = 1.75
Thus the Cost of one book is $1.75.