Alan has read ​10% of a book. He has 81 more pages to finish. How many pages are there in the​ book?

90

Step-by-step explanation:

100%-10%=90%

90%->81

10%->9

100%->9+81=90

honeycrisps have skyrocketed to about $4.50 per pound

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.