A and B together can complete a piece of work in 16 days. B alone can complete the same work in 24 days. In how many days can A alone complete the same work?

What is the respective ratio between the total number of muffins sold by bakeries Q and S together in May and the total number of muffins sold by bakeries P and T together in the same month?

If the number of muffins sold by bakery T in August was 70% more than that sold by the same bakery in June, what was the number of muffins sold by the bakery T in August?

What is the difference between the total number of muffins sold by bakeries P and Q together in April and the total number of muffins sold by bakeries R and S together in July?