Answer: Joan's book has 598 pages.
Explanation:
First, make an equation.
Leo's book = 276 pages
Joan's book = 276 (2 1/6)
It'll be easier for us to change it into an improper fraction. Remember you multiply the denominator by the coefficient and add the numerator for the new improper numerator.
SO,
we have 6 *2 = 12 +1 = 13. We keep the denominator the same in improper fraction. So now we have (13/6) x 276. You can either turn this fraction into a decimal or multiply it as is. I'm not sure if your problem allows you to have a calculator, but if not, you can do 276 x 13 = 3588 (through multiplication) and divide that by 6 (long division)which comes out to be 598.
Hopefully, I didn't understand your question wrong. Hope this helped! :)