Final answer:
Lalita's daily repair rate - Maya's daily repair rate = (z/y) - (a/b) bicycles per day.
Step-by-step explanation:
To find out how many more bicycles Lalita repairs than Maya in one day, we need to compare their repair rates. Lalita repairs x bicycles each day for y days, so she repairs a total of z bicycles. This means that Lalita repairs z/y bicycles per day. On the other hand, Maya repairs a total of a bicycles in b days, so she repairs a/b bicycles per day.
To find the difference in the number of bicycles repaired by Lalita and Maya in one day, we subtract the number of bicycles repaired by Maya per day from the number repaired by Lalita per day. Therefore, the number of bicycles Lalita repairs more than Maya in one day is z/y - a/b.