The parents have to give 65 dollars for their children to be under care till 6 o'clock. AFter 6 o'clock, they had to pay 1.50 dollars for one minute. This parent gives a total of 78.50 dollar for that day. So, the equation is :
9 and 1/4 are both rational numbers (which are numbers that can be represented in a fraction; 9 can be represented as 9/1) And since it equals to 9/4 (or 2 1/4) the product is also a rational number.
