The answer is 20p. P represents the number of boxes she buys and 20 is how many pens are in each box.
10% of the day =10/100×24=2 hours 24 minutes therefore 2 hours 30 minutes is more than 10% of a day
Step-by-step explanation:

If it helps, write as a product of fractions, grouped by variable.

Now reduce using exponent rules.

Answer:
10 cubes
Step-by-step explanation: