Explanation:
A potter can make 6 small plates in one hour, h.
=> So to make 1 small plates, a potter needs: 1/6 hour
Yesterday, the number of small plates the potter made was:
=> Number of small plates = Total plates - Number of large plates= 23 - 5 = 18 plates
=> Hours the potter needed to make 18 small plates were: Number of plates x Hour to make 1 plate = 18 x (1/6) = 3 hours
=> Hours the potter spent working on small plates were 3 hours.
The equation is:
Hours spent working on small plates
= Number of small plates made x Time to make 1 small plates
= (1/6) x number of small plates made (hours)