it takes `1/2` minute to cook one dosa. How many dosas can be cooked in `1/4` hour?

Aimee takes 6 minutes to pack a box and Brianna takes 5 minutes to pack a box. How many hours will it take them to pack 110 boxes?

how many seconds are there in one hour ?

If Alex can fold 12 napkins in x minutes, how many napkins can be fold in y hours?

Life Science: Bacteria can divide in ever 20 minutes. So 1 bacterium can multiply to 2 in 20 minutes. 4 in 40 minutes, and so on. How many bacterial will there be in 6 hours? Write your answer using exponents, and then evaluate.

A subway car passes 3 stations every 10 minutes. At this rate, how many stations will be it pass in 1 hour?

Aslam can walk 5""2/5 km in one hour. How much distance will he cover in 3""1/4 hours ?