Express as a ordinary numerals
(a)2×7
(b)4×10​

Step-by-step explanation:

There are 7 days per week. Excluding Saturday and Sunday, we have 5 days per week. 2 weeks, which means that 5 times 2 which is 10 days in two weeks. 8am to 9am is one hour which is $12.50 per day. 12.50 multiplied by 10 days gets us $125 in two weeks.

P.S Usually it should be 8AM to 9PM and not an hour in a day, but for this problem it's nonreal.