Mario earns $9.40 per hour at his part-time job. Last month, he worked 7 1/4 hours the first week. 8 3/4 hours the second week,
5 1/2 hours the third week and 6 3/4 hours the fourth week. Mario puts half of his paycheck in the bank every other week starting with the first. How much money did Mario earn each week? How much did he put in the bank last month? How much money did Mario have to spend from his 4 paychecks.?
1. Just simply multiple the number of hours to the wage rate.
1st week: $9.4/h *(7 h + 1/4 h) = $68.15 2nd week: $9.4/h *(8 h + 3/4 h) = $82.25 3rd week: $9.4/h *(5 h + 1/2 h) = $51.7 4th week: $9.4/h *(6 h + 3/4 h) = $63.45
2. There are four week in the month. Since he puts half of his earning every week, we take into account the 2nd and 4th week earnings.
Money in the bank = $82.25/2 + $63.45/2 = $72.85
3. The rest of the money is assumed to be spent. Take the sum of all the earnings:
Total Earnings = 68.15+82.25+51.7+63.45 = $265.55 Thus, the earnings spent is Earnings Spent = Total Earnings - Money in the bank Earnings Spent = $265.55 - $72.85 = $192.7
Surface area of a cube is given by SA=6a² but SA=150 in² thus 150=6a² solving for a we obtain: 150/6=a² a²=25 thus a=√25 a=5 inches hence the side length is 5inches
